The Waikīkī Aquarium is an aquarium in Honolulu , Hawaii , United States . It was founded in 1904 and has been an institution of the University of Hawaiʻi at Mānoa since 1919. The aquarium is the second-oldest still-operating public aquarium in the United States , after the New York Aquarium .
95-622: Built next to a living coral reef on the Waikīkī shoreline, the Waikīkī Aquarium is home to more than 3,500 organisms of 490 species of marine plants and animals. Each year, over 330,000 people visit, and over 30,000 schoolchildren participate in the aquarium's education activities and programs. The Waikiki Aquarium was designated a Coastal Ecosystem Learning Center of the Coastal America Partnership federal program. The Waikiki Aquarium
190-453: A symbiotic relationship with a class of dinoflagellate algae , zooxanthellae of the genus Symbiodinium , which can form as much as 30% of the tissue of a polyp. Typically, each polyp harbors one species of alga, and coral species show a preference for Symbiodinium . Young corals are not born with zooxanthellae, but acquire the algae from the surrounding environment, including the water column and local sediment. The main benefit of
285-420: A calcified material. The polyps of stony corals have six-fold symmetry. In stony corals, the tentacles are cylindrical and taper to a point, but in soft corals they are pinnate with side branches known as pinnules. In some tropical species, these are reduced to mere stubs and in some, they are fused to give a paddle-like appearance. Coral skeletons are biocomposites (mineral + organics) of calcium carbonate, in
380-491: A calcium carbonate base, with polyps that bear six stiff tentacles, and soft coral (Alcyonacea and ahermatypic coral) which are pliable and formed by a colony of polyps with eight feather-like tentacles. These two classifications arose from differentiation in gene expressions in their branch tips and bases that arose through developmental signaling pathways such as Hox , Hedgehog , Wnt , BMP etc. Scientists typically select Acropora as research models since they are
475-530: A clerk for the Honolulu Rapid Transit Company, was transferred to manage the Aquarium, becoming the first director in 1904. Despite his lack of formal training in marine sciences, Potter was a vigorous supporter of Hawaiian ichthyology, and served as director until May 1940. Potter's Angelfish ( Centropyge potteri ), was named in his honor. In 1940, Spencer Tinker was appointed the second director of
570-417: A commonly highly abundant bacterium in corals, has exhibited codiversification with its host. This hints at an intricate set of relationships between the members of the coral holobiont that have been developing as evolution of these members occurs. A study published in 2018 revealed evidence of phylosymbiosis between corals and their tissue and skeleton microbiomes. The coral skeleton, which represents
665-520: A full moon. A full moon is equivalent to four to six hours of continuous dim light exposure, which can cause light-dependent reactions in protein. Corals contain light-sensitive cryptochromes , proteins whose light-absorbing flavin structures are sensitive to different types of light. This allows corals such as Dipsastraea speciosa to detect and respond to changes in sunlight and moonlight. Moonlight itself may actually suppress coral spawning. The most immediate cue to cause spawning appears to be
760-409: A list of types of trees, and the 11th-century French commentator Rashi describes it as "a type of tree (מין עץ) that grows underwater that goes by the (French) name 'coral'." The Persian polymath Al-Biruni (d.1048) classified sponges and corals as animals, arguing that they respond to touch. Nevertheless, people believed corals to be plants until the eighteenth century when William Herschel used
855-574: A microscope to establish that coral had the characteristic thin cell membranes of an animal . Presently, corals are classified as species of animals within the sub-classes Hexacorallia and Octocorallia of the class Anthozoa in the phylum Cnidaria . Hexacorallia includes the stony corals and these groups have polyps that generally have a 6-fold symmetry. Octocorallia includes blue coral and soft corals and species of Octocorallia have polyps with an eightfold symmetry, each polyp having eight tentacles and eight mesenteries . The group of corals
950-441: A multi-domain marine animal symbiosis. The gammaproteobacterium Endozoicomonas is emerging as a central member of the coral's microbiome, with flexibility in its lifestyle. Given the recent mass bleaching occurring on reefs, corals will likely continue to be a useful and popular system for symbiosis and dysbiosis research. Astrangia poculata , the northern star coral, is a temperate stony coral , widely documented along
1045-514: A new colony. Although some corals are able to catch plankton and small fish using stinging cells on their tentacles, most corals obtain the majority of their energy and nutrients from photosynthetic unicellular dinoflagellates of the genus Symbiodinium that live within their tissues. These are commonly known as zooxanthellae and give the coral color. Such corals require sunlight and grow in clear, shallow water, typically at depths less than 60 metres (200 feet; 33 fathoms), but corals in
SECTION 10
#17328476515601140-459: A scientist, but I'll get a jackhammer in there and remove all the concrete that's there creating this backwash and sucking out more sand, plus it's just downright dangerous." The beach hosts many events, including surf competitions , outdoor performances , hula dancing , and outrigger canoe races. The many amenities, shops, and hotels enable Waikiki to generate approximately 42 percent of Hawaiʻi's visitor revenue. The neighborhood extends from
1235-680: A sculpture incorporating ancient basaltic stones , was installed nearby and is considered a local monument . A bronze sculpture in Kapiʻolani Park of Mahatma Gandhi by Stephen Lowe entitled "A Fistful of Salt" was a gift in 1990 from the Gandhi Memorial International Foundation and the Jhamandas Watumull Fund. At Kūhiō Beach and Queens Beach, three public artworks were installed in the early 2000s. The bronze statue of Prince Jonah Kuhio by Sean Browne and
1330-400: A single polyp and eventually develops into a juvenile and then adult by asexual budding and growth. Within a coral head, the genetically identical polyps reproduce asexually , either by budding (gemmation) or by dividing, whether longitudinally or transversely. Budding involves splitting a smaller polyp from an adult. As the new polyp grows, it forms its body parts . The distance between
1425-415: A skeleton composed of calcium carbonate to strengthen and protect the organism. This is deposited by the polyps and by the coenosarc , the living tissue that connects them. The polyps sit in cup-shaped depressions in the skeleton known as corallites . Colonies of stony coral are markedly variable in appearance; a single species may adopt an encrusting, plate-like, bushy, columnar or massive solid structure,
1520-453: A subset of coral-associated bacteria. Many corals in the order Scleractinia are hermatypic , meaning that they are involved in building reefs. Most such corals obtain some of their energy from zooxanthellae in the genus Symbiodinium . These are symbiotic photosynthetic dinoflagellates which require sunlight; reef-forming corals are therefore found mainly in shallow water. They secrete calcium carbonate to form hard skeletons that become
1615-593: A surfing hotspot. "Dukes", a club in Waikiki named for Kahanamoku, helped Don Ho produce music and hosted the longest-running show in Waikiki. The first high-rise hotels on Waikiki were built in 1955, including the Waikiki Biltmore and Sheraton Princess Kaiulani Hotel . Development boomed due to demand, and the area became filled with large resort hotels, such as the Hilton Hawaiian Village , Halekulani ,
1710-643: A third nature ( tertia natura )". Petrus Gyllius copied Pliny, introducing the term zoophyta for this third group in his 1535 book On the French and Latin Names of the Fishes of the Marseilles Region ; it is popularly but wrongly supposed that Aristotle created the term. Gyllius further noted, following Aristotle, how hard it was to define what was a plant and what was an animal. The Babylonian Talmud refers to coral among
1805-554: Is Kalākaua Avenue , named after King Kalākaua , which houses most of the high-end hotels ( Royal Hawaiian , Sheraton , Hyatt , Marriott , Moana Surfrider Hotel ), most of the luxury designer brand stores ( Apple Store , Chanel , Louis Vuitton , Prada , Burberry , Dior , Tiffany & Co. , Fendi , Harry Winston , Saint Laurent , Gucci , and Hermès ), department store ( Macy's ), and popular surf clothing brand stores ( Quiksilver , Billabong , Volcom ). Waikiki's other main thoroughfare, Kūhiō Avenue, named after Prince Kūhiō ,
1900-531: Is paraphyletic because the sea anemones are also in the sub-class Hexacorallia. The delineation of coral species is challenging as hypotheses based on morphological traits contradict hypotheses formed via molecular tree-based processes. As of 2020, there are 2175 identified separate coral species, 237 of which are currently endangered, making distinguishing corals to be the utmost of importance in efforts to curb extinction. Adaptation and delineation continues to occur in species of coral in order to combat
1995-615: Is better known for its restaurants, cafes and grocers, along with its clubs, nightlife and prostitution . In 1990, the 9-foot (3 m) bronze statue of Duke Kahanamoku by Gordon Fisher was installed at Waikiki Beach, accompanied by a bronze replica of his surfboard, honorary spears, and commemorative bronze plaques. It serves as a culture and tourist locale with thousands of annual visitors and numerous cultural events. Seven years later, Billy Fields created The Stones of Life (in Hawaiian: Nā Pōhaku Ola O Kapaemahu A Me Kapuni ),
SECTION 20
#17328476515602090-409: Is coordinated by chemical communication. Corals predominantly reproduce sexually . About 25% of hermatypic corals (reef-building stony corals) form single-sex ( gonochoristic ) colonies, while the rest are hermaphroditic . It is estimated more than 67% of coral are simultaneous hermaphrodites . About 75% of all hermatypic corals "broadcast spawn" by releasing gametes — eggs and sperm —into
2185-594: Is located in Waikiki proper, while Waikiki Elementary School is located nearby, at the makai (seaward) edge of the Kapahulu neighborhood. The Hawaii State Public Library System operates the Waikiki Public Library. Waikiki is twinned with: Coral Corals are colonial marine invertebrates within the subphylum Anthozoa of the phylum Cnidaria . They typically form compact colonies of many identical individual polyps . Coral species include
2280-415: Is negatively buoyant, sinking onto the waiting egg carriers that harbor unfertilized eggs for weeks. Synchronous spawning events sometimes occur even with these species. After fertilization, the corals release planula that are ready to settle. The time from spawning to larval settlement is usually two to three days but can occur immediately or up to two months. Broadcast-spawned planula larvae develop at
2375-612: Is one of six beaches in the district, along with Queen's Beach , Kuhio Beach , Gray's Beach, Fort DeRussy Beach, and Kahanamoku Beach. The sandy beach is almost entirely man-made. Waikiki (Hawaii) is home to public places including Kapiʻolani Park , Fort DeRussy , Kahanamoku Lagoon , Kūhiō Beach Park , and Ala Wai Harbor . Waikiki was the first capital of the Kingdom of Hawaii from 1795 to 1796. The Hawaiian language name Waikīkī means spouting fresh water , for springs and streams that fed wetlands that once separated Waikiki from
2470-449: Is thought to have been laid down about two million years ago. Over time, corals fragment and die, sand and rubble accumulates between the corals, and the shells of clams and other molluscs decay to form a gradually evolving calcium carbonate structure. Coral reefs are extremely diverse marine ecosystems hosting over 4,000 species of fish, massive numbers of cnidarians, molluscs , crustaceans , and many other animals. At certain times in
2565-591: The Ala Wai Canal (a channel dug to drain wetlands) on the west and north, to Diamond Head ( Lēʻahi, tuna brow) on the east. Waikiki Beach is noted for its views of the Diamond Head tuff cone , its usually warm and cloud-free climate, and its surf break . The Waikiki skyline is filled with high-rises and resort hotels. Before 1950, the beach in the Waikiki neighborhood was continuous and known as Waikiki Beach. Seawalls and other developments have since separated
2660-510: The Corps of Engineers Pacific Ocean Division, created a Draft Environmental Statement for the Kuhio Beach Sector of Waikiki, which aimed to improve the overall quality and size of the fading, narrowing shoreline. From October 29 through November 4, 2000, the first FINA World Open Water Swimming Championships were held in the waters off Waikiki Beach. A partial restoration was completed in
2755-498: The chambered nautilus (Nouméa Aquarium was first) and the first in the world to produce viable Nautilus embryos. Other "firsts" for the Waikiki Aquarium were displays of the blacktip reef sharks ( Carcharhinus melanopterus ) ca. 1957; broadclub cuttlefish ( Sepia latimanus ) in 1978; a mahimahi hatchery and exhibit ( Coryphaena hippurus) in 1991; and the giant clam ( Tridacna gigas ) in 1979. The largest giant clam at
2850-502: The red coral , korallion , in his book on stones, implying it was a mineral, but he described it as a deep-sea plant in his Enquiries on Plants , where he also mentions large stony plants that reveal bright flowers when under water in the Gulf of Heroes . Pliny the Elder stated boldly that several sea creatures including sea nettles and sponges "are neither animals nor plants, but are possessed of
2945-493: The AZA Bean Award for the "South Pacific Habitat" exhibition (2003). Art at the Waikiki Aquarium includes: Waik%C4%ABk%C4%AB Waikiki ( / ˌ w aɪ k ɪ ˈ k iː / ; Hawaiian : Waikīkī ; Hawaiian: [vɐjˈtiːtiː, wɐjˈkiːkiː] ) is a Honolulu neighborhood and the eponymous Waikiki beach on its south shore, on the island of Oʻahu in the U.S. state of Hawaii . Waikiki Beach
Waikīkī Aquarium - Misplaced Pages Continue
3040-450: The Acropora genus, colony differentiation through up-regulation and down-regulation of DEs. Systematic studies of soft coral species have faced challenges due to a lack of taxonomic knowledge. Researchers have not found enough variability within the genus to confidently delineate similar species, due to a low rate in mutation of mitochondrial DNA . Environmental factors, such as
3135-462: The Aquarium is to increase public awareness of the ecology and conservation of marine life and reef habitats through aquarium exhibitory, research and education. His goal is to consolidate and build upon the existing exhibitory expertise and the solid foundation laid down by his two predecessors, and to modernize, diversify and expand the aquarium's facilities through a program of gradual renewal, renovation and replacement. The Waikiki Aquarium developed
3230-587: The Aquarium moved to its present location, a 2.35-acre parcel of land two hundred yards south of the original site, and changed its name to Waikiki Aquarium. The aquarium opened in 1904 with 35 tanks and 400 marine organisms, and during its first year, biologist David Starr Jordan proclaimed it as having the finest collection of fishes in the world. Considered state-of-the-art at that time, the aquarium also received positive comments from such notable visitors of that era as William Jennings Bryan and Jack London . The Aquarium has had five directors. Frederick A. Potter,
3325-423: The Aquarium was able to fund increased services and to renovate exhibits. Taylor's goby, Trimma taylori , is named in his honor. In 1990, Bruce Carlson was appointed the fourth director, a post he had held in an interim capacity since the departure of Taylor in 1986. Carlson had previously worked closely with Taylor and others to design new and more naturalistic exhibits that focused on the marine life of Hawaii and
3420-519: The Aquarium was designated a Coastal Ecosystem Learning Center of the Coastal America partnership. Four reef animals are named after him: the damselfish Paraglyphidodon carlsoni , the anthias fish Pseudanthias carlsoni , and two nudibranchs Halgerda carlsoni and Ardeadoris carlsoni . In April 2004, Andrew Rossiter was appointed the fifth director, joining the Aquarium at the onset of its 100th anniversary celebrations. His long-term ambition at
3515-479: The Aquarium, after serving on the faculty of the University of Hawaii Zoology Department. Tinker was well known for his books on Hawaiian fishes, Pacific crustaceans, and other marine life: his book Hawaiian Fishes remains a classic. Tinker's Butterflyfish, Chaetodon tinkeri , was named after him. Tinker retired in 1973. The Hawaiian butterflyfish is named Chaetodon tinkeri in honor of Spencer Tinker, who became
3610-609: The Hyatt Regency Waikiki, Marriott Waikiki, Sheraton Waikiki . These complemented historic hotels dating back to the early 20th century such as the Moana Surfrider Hotel and the Royal Hawaiian Hotel . Waikiki developed erosion problems starting in the late 1800s, as hotels and homes were built too close to the natural shoreline, while seawalls and other structures blocked the natural ebb and flow of sand along
3705-531: The Illumina platform are of insufficient length (approximately 250 base pairs) for the design of primers and probes. In 2019, Goldsmith et al. demonstrated Sanger sequencing was capable of reproducing the biologically relevant diversity detected by deeper next-generation sequencing , while also producing longer sequences useful to the research community for probe and primer design (see diagram on right). Reef-building corals are well-studied holobionts that include
3800-596: The International Union for Conservation of Nature's endangered species list and at risk of species loss. Ocean acidification (falling pH levels in the oceans) is threatening the continued species growth and differentiation of corals. Mutation rates of Vibrio shilonii , the reef pathogen responsible for coral bleaching , heavily outweigh the typical reproduction rates of coral colonies when pH levels fall. Thus, corals are unable to mutate their HSPs and other climate change preventative genes to combat
3895-737: The Waikiki Aquarium was acquired from the Micronesian Mariculture Demonstration Center in Palau in June 1982 and was estimated to be five-years old at that time. At 38 years old in 2016, it is the longest-lived giant clam in any aquarium in the world. The Waikiki Aquarium has won national awards for its exhibits and aquatic culture methods: Association of Zoos and Aquariums (AZA) Bean Award for Nautilus propagation (1991); AZA/Munson Conservation Award for "Corals are Alive" exhibition (1999); AZA/Munson Conservation Exhibit Award (2003); and
Waikīkī Aquarium - Misplaced Pages Continue
3990-423: The Waikiki shoreline. Following World War II, Waikiki beach restoration efforts have occurred every few years. Sand was imported to this artificial beach from the 1920s to the 1970s, once by boat and barge from Southern California. 1,730 feet (530 m) of shoreline was replenished at a cost of $ 2.4 million following chronic erosion of more than a foot a year. Importing stopped in the 1970s. In March 1971,
4085-405: The abundance and performance of the microalgal symbionts, as well as calcification and physiology of the host. Studies have also suggested that resident bacteria, archaea, and fungi additionally contribute to nutrient and organic matter cycling within the coral, with viruses also possibly playing a role in structuring the composition of these members, thus providing one of the first glimpses at
4180-407: The algae contribute to coral coloration; some colors, however, are due to host coral pigments, such as green fluorescent proteins (GFPs). Ejection increases the polyp's chance of surviving short-term stress and if the stress subsides they can regain algae, possibly of a different species, at a later time. If the stressful conditions persist, the polyp eventually dies. Zooxanthellae are located within
4275-513: The aquarium's second director in 1940. During those early years (1919–1973) admissions to the Aquarium were deposited to the State General Fund and did not return to the Aquarium for upkeep. This lack of investment resulted in the Aquarium falling into disrepair and it was in urgent need of a new purpose and vision. In 1975, Leighton Taylor was appointed the third director. An ichthyologist by training, and an expert on sharks, Taylor understood
4370-487: The area has decreased and in some cases ceased. The area was previously considered a refuge for corals because mass bleaching events due to climate change had not been observed there. Coral restoration techniques for coral reef management are being developed to increase fertilization rates, larval development, and settlement of new corals. Brooding species are most often ahermatypic (not reef-building) in areas of high current or wave action. Brooders release only sperm, which
4465-464: The beach. In the 1920s and 1930s sand was imported from Manhattan Beach, California , via ship and barge. Before 1950, Waikiki beaches were continuous. Then seawalls and groins began to appear. These helped build sand at one beach, but typically appropriated sand from others. They became separated into sections, some with sandy beach and others without. By 1950, more than 80 structures, including seawalls, groins , piers, and storm drains, occupied
4560-458: The capture of food. Polyps extend their tentacles, particularly at night, often containing coiled stinging cells ( cnidocytes ) which pierce, poison and firmly hold living prey paralyzing or killing them. Polyp prey includes plankton such as copepods and fish larvae. Longitudinal muscular fibers formed from the cells of the ectoderm allow tentacles to contract to convey the food to the mouth. Similarly, circularly disposed muscular fibres formed from
4655-507: The cell layers of the body wall. The mesoglea can contain skeletal elements derived from cells migrated from the ectoderm. The sac-like body built up in this way is attached to a hard surface, which in hard corals are cup-shaped depressions in the skeleton known as corallites . At the center of the upper end of the sac lies the only opening called the mouth, surrounded by a circle of tentacles which resemble glove fingers. The tentacles are organs which serve both for tactile sense and for
4750-475: The children's story sculpture Makua and Kila by Holly Young were installed in 2001. Robert Pashby's Surfer on a Wave was installed at Queens Beach in 2003. Waikiki beach has had repeated problems with erosion, leading to the construction of groins and beach replenishment projects. Imported sand came from California, local beaches such as Pāpōhaku Beach on Moloka‘i, and a sandbar from Oʻahu's Northern side near Kahuku . Officials look for ways to sustain
4845-406: The coast into eight distinct beaches. Since 1951, nearly 2,800,000 cubic feet (80,000 m ) of sand have been added to restore the beach in the region, but it is believed that little of the added sand remains. As of 2020 the family of beaches in the region are still referred to as "Waikiki Beach", but most venues and addresses will use the name of a specific subsidiary beach. From Waikiki Beach
SECTION 50
#17328476515604940-558: The cold-water genus Lophelia which can survive as deep as 3,300 metres (10,800 feet; 1,800 fathoms). Some have been found as far north as the Darwin Mounds , northwest of Cape Wrath , Scotland, and others off the coast of Washington state and the Aleutian Islands . The classification of corals has been discussed for millennia, owing to having similarities to both plants and animals. Aristotle 's pupil Theophrastus described
5035-440: The colony during storms or other disruptions. The separated individuals can start new colonies. Corals are one of the more common examples of an animal host whose symbiosis with microalgae can turn to dysbiosis , and is visibly detected as bleaching. Coral microbiomes have been examined in a variety of studies, which demonstrate how oceanic environmental variations, most notably temperature, light, and inorganic nutrients, affect
5130-421: The colony thus creates a skeleton characteristic of the species which can measure up to several meters in size. Individual colonies grow by asexual reproduction of polyps. Corals also breed sexually by spawning : polyps of the same species release gametes simultaneously overnight, often around a full moon . Fertilized eggs form planulae, a mobile early form of the coral polyp which, when mature, settles to form
5225-797: The coral cytoplasm and due to the algae's photosynthetic activity the internal pH of the coral can be raised; this behavior indicates that the zooxanthellae are responsible to some extent for the metabolism of their host corals. Stony Coral Tissue Loss Disease has been associated with the breakdown of host-zooxanthellae physiology. Moreover, Vibrio bacterium are known to have virulence traits used for host coral tissue damage and photoinhibition of algal symbionts. Therefore, both coral and their symbiotic microorganisms could have evolved to harbour traits resistant to disease and transmission. Corals can be both gonochoristic (unisexual) and hermaphroditic , each of which can reproduce sexually and asexually. Reproduction also allows coral to settle in new areas. Reproduction
5320-591: The coral itself together with its symbiont zooxanthellae (photosynthetic dinoflagellates), as well as its associated bacteria and viruses. Co-evolutionary patterns exist for coral microbial communities and coral phylogeny. It is known that the coral's microbiome and symbiont influence host health, however, the historic influence of each member on others is not well understood. Scleractinian corals have been diversifying for longer than many other symbiotic systems, and their microbiomes are known to be partially species-specific. It has been suggested that Endozoicomonas ,
5415-598: The corals supplementing their plankton diet with the products of photosynthesis produced by these symbionts . The polyps interconnect by a complex and well-developed system of gastrovascular canals, allowing significant sharing of nutrients and symbionts. The external form of the polyp varies greatly. The column may be long and slender, or may be so short in the axial direction that the body becomes disk-like. The tentacles may number many hundreds or may be very few, in rare cases only one or two. They may be simple and unbranched, or feathery in pattern. The mouth may be level with
5510-578: The dangers posed by the climate crisis. Corals are colonial modular organisms formed by asexually produced and genetically identical modules called polyps. Polyps are connected by living tissue to produce the full organism. The living tissue allows for inter module communication (interaction between each polyp), which appears in colony morphologies produced by corals, and is one of the main identifying characteristics for a species of coral. There are two main classifications for corals: hard coral (scleractinian and stony coral) which form reefs by
5605-434: The dark portion of the night between sunset and moonrise. Over the lunar cycle, moonrise shifts progressively later, occurring after sunset on the day of the full moon. The resulting dark period between day-light and night-light removes the suppressive effect of moonlight and enables coral to spawn. The spawning event can be visually dramatic, clouding the usually clear water with gametes. Once released, gametes fertilize at
5700-476: The eastern coast of the United States. The coral can live with and without zooxanthellae (algal symbionts), making it an ideal model organism to study microbial community interactions associated with symbiotic state. However, the ability to develop primers and probes to more specifically target key microbial groups has been hindered by the lack of full-length 16S rRNA sequences, since sequences produced by
5795-525: The endoderm permit tentacles to be protracted or thrust out once they are contracted. In both stony and soft corals, the polyps can be retracted by contracting muscle fibres, with stony corals relying on their hard skeleton and cnidocytes for defense. Soft corals generally secrete terpenoid toxins to ward off predators. In most corals, the tentacles are retracted by day and spread out at night to catch plankton and other small organisms. Shallow-water species of both stony and soft corals can be zooxanthellate ,
SECTION 60
#17328476515605890-722: The existing sand by eliminating loss due to tidal flow. Erosion claims about one foot (0.3 m) of beach per year. Local sources are sought for sand to replenish the beach. Waikiki Beach had repeated contamination problems due to sewage spills in 2017. Many homeless people settle around the beach because of the public shower and sanitary facilities available there. The Honolulu Police Department has increased patrolling in and around Waikiki Beach with assistance from other city agencies and local businesses to prevent homeless people from making camp in this area. Hawaii state Department of Education operates conventional public schools throughout Hawaii. Thomas Jefferson Elementary School
5985-426: The exoskeleton divide transversally into two parts. This means one has the basal disc (bottom) and the other has the oral disc (top); the new polyps must separately generate the missing pieces. Asexual reproduction offers the benefits of high reproductive rate, delaying senescence, and replacement of dead modules, as well as geographical distribution. Whole colonies can reproduce asexually, forming two colonies with
6080-465: The first beach resorts. Later that year Robert Louis Stevenson stayed at the resort; subsequently it became a popular destination for mainland tourists. The area at coordinates 21°15′49″N 157°49′17″W / 21.26361°N 157.82139°W / 21.26361; -157.82139 is still called "Sans Souci Beach". In the early 1900s, Waikiki was home to many wetlands , which were claimed to harbor disease-carrying mosquitoes. To get rid of
6175-410: The first displays of living Pacific corals in the United States in 1978 using water from a seawater well and natural sunlight. A special surge device was developed later to allow culture of staghorn and table corals (Acropora spp.). Some of the corals at the Waikiki Aquarium are over 30 years old. The Waikiki Aquarium was the second aquarium in the world, and the first in the United States, to maintain
6270-400: The form of calcite or aragonite. In scleractinian corals, "centers of calcification" and fibers are clearly distinct structures differing with respect to both morphology and chemical compositions of the crystalline units. The organic matrices extracted from diverse species are acidic, and comprise proteins, sulphated sugars and lipids; they are species specific. The soluble organic matrices of
6365-498: The framework of the reef. However, not all reef-building corals in shallow water contain zooxanthellae, and some deep water species, living at depths to which light cannot penetrate, form reefs but do not harbour the symbionts. There are various types of shallow-water coral reef, including fringing reefs, barrier reefs and atolls; most occur in tropical and subtropical seas. They are very slow-growing, adding perhaps one centimetre (0.4 in) in height each year. The Great Barrier Reef
6460-593: The genus Leptoseris have been found as deep as 172 metres (564 feet; 94 fathoms). Corals are major contributors to the physical structure of the coral reefs that develop in tropical and subtropical waters, such as the Great Barrier Reef off the coast of Australia . These corals are increasingly at risk of bleaching events where polyps expel the zooxanthellae in response to stress such as high water temperature or toxins. Other corals do not rely on zooxanthellae and can live globally in much deeper water, such as
6555-633: The geological past, corals were very abundant. Like modern corals, their ancestors built reefs, some of which ended as great structures in sedimentary rocks . Fossils of fellow reef-dwellers algae, sponges, and the remains of many echinoids , brachiopods , bivalves , gastropods , and trilobites appear along with coral fossils. This makes some corals useful index fossils . Coral fossils are not restricted to reef remnants, and many solitary fossils are found elsewhere, such as Cyclocyathus , which occurs in England's Gault clay formation. Corals first appeared in
6650-430: The important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton. A coral "group" is a colony of very many genetically identical polyps. Each polyp is a sac-like animal typically only a few millimeters in diameter and a few centimeters in height. A set of tentacles surround a central mouth opening. Each polyp excretes an exoskeleton near the base. Over many generations,
6745-436: The increase in temperature and decrease in pH at a competitive rate to these pathogens responsible for coral bleaching, resulting in species loss. For most of their life corals are sessile animals of colonies of genetically identical polyps . Each polyp varies from millimeters to centimeters in diameter, and colonies can be formed from many millions of individual polyps. Stony coral, also known as hard coral, polyps produce
6840-491: The interior. After the founding of the Kingdom of Hawaii, Waikiki was its first capital, 1795–1796. In the 1800s, the area was a retreat for Hawaiian royalty, who enjoyed surfing there on early forms of longboards . A few small hotels opened in the 1880s. In 1893, Greek-American George Lycurgus leased the guest house of Allen Herbert and renamed it the "Sans Souci" (French for "without worries" or “carefree”) creating one of
6935-607: The mosquitoes, developers created the Ala Wai canal . The canal, originally known as the Waikiki Drainage Canal, was created by a Hawaiian dredging company run by Walter F. Dillingham. The project took about seven years, 1921–1928. Duke Kahanamoku became a well-known surfer in Waikiki. Throughout his life and after competing in the Olympics, many people around the world wanted to learn to surf. Duke's influence made Waikiki beach
7030-458: The most diverse genus of hard coral, having over 120 species. Most species within this genus have polyps which are dimorphic: axial polyps grow rapidly and have lighter coloration, while radial polyps are small and are darker in coloration. In the Acropora genus, gamete synthesis and photosynthesis occur at the basal polyps, growth occurs mainly at the radial polyps. Growth at the site of
7125-418: The most diverse of the three coral microbiomes, showed the strongest evidence of phylosymbiosis. Coral microbiome composition and richness were found to reflect coral phylogeny . For example, interactions between bacterial and eukaryotic coral phylogeny influence the abundance of Endozoicomonas , a highly abundant bacterium in the coral holobiont. However, host-microbial cophylogeny appears to influence only
7220-523: The need for a new Aquarium vision committed to education, conservation and research, and he realized the need to diversify revenue sources. The logo, Education Department, Volunteer Program, library, research facility, gift shop, Friends of the Waikiki Aquarium support organization, the first Exhibits Master Plan (1978), and accreditation by the Association of Zoos and Aquariums (AZA) all happened during his tenure. By accepting donations, memberships and grants,
7315-637: The new and adult polyps grows, and with it, the coenosarc (the common body of the colony). Budding can be intratentacular, from its oral discs, producing same-sized polyps within the ring of tentacles, or extratentacular, from its base, producing a smaller polyp. Division forms two polyps that each become as large as the original. Longitudinal division begins when a polyp broadens and then divides its coelenteron (body), effectively splitting along its length. The mouth divides and new tentacles form. The two polyps thus created then generate their missing body parts and exoskeleton. Transversal division occurs when polyps and
7410-416: The polyps of most are connected by sheets of tissue called coenosarc, and in some species these sheets are thick and the polyps deeply embedded in them. Some soft corals encrust other sea objects or form lobes. Others are tree-like or whip-like and have a central axial skeleton embedded at their base in the matrix of the supporting branch. These branches are composed of a fibrous protein called gorgonin or of
7505-412: The radial polyps encompasses two processes: asexual reproduction via mitotic cell proliferation , and skeleton deposition of the calcium carbonate via extra cellular matrix (EMC) proteins acting as differentially expressed (DE) signaling genes between both branch tips and bases. These processes lead to colony differentiation , which is the most accurate distinguisher between coral species. In
7600-440: The rise of temperatures and acid levels in our oceans account for some speciation of corals in the form of species lost . Various coral species have heat shock proteins (HSP) that are also in the category of DE across species. These HSPs help corals combat the increased temperatures they are facing which lead to protein denaturing, growth loss, and eventually coral death. Approximately 33% of coral species are on
7695-406: The same genotype. The possible mechanisms include fission, bailout and fragmentation. Fission occurs in some corals, especially among the family Fungiidae , where the colony splits into two or more colonies during early developmental stages. Bailout occurs when a single polyp abandons the colony and settles on a different substrate to create a new colony. Fragmentation involves individuals broken from
7790-563: The same night even when multiple species are present. Synchronous spawning may form hybrids and is perhaps involved in coral speciation . Environmental cues that influence the release of gametes into the water vary from species to species. The cues involve temperature change, lunar cycle , day length , and possibly chemical signalling. Other factors that affect the rhythmicity of organisms in marine habitats include salinity, mechanical forces, and pressure or magnetic field changes. Mass coral spawning often occurs at night on days following
7885-409: The skeleton, with the latter showing the greatest microbial richness. The zooxanthellae benefit from a safe place to live and consume the polyp's carbon dioxide , phosphate and nitrogenous waste. Stressed corals will eject their zooxanthellae, a process that is becoming increasingly common due to strain placed on coral by rising ocean temperatures. Mass ejections are known as coral bleaching because
7980-433: The skeletons allow to differentiate zooxanthellae and non-zooxanthellae specimens. Polyps feed on a variety of small organisms, from microscopic zooplankton to small fish. The polyp's tentacles immobilize or kill prey using stinging cells called nematocysts . These cells carry venom which they rapidly release in response to contact with another organism. A dormant nematocyst discharges in response to nearby prey touching
8075-540: The spring of 2012. The project imported sand from nearby shoals and widened the 1,700-foot-long (520 m) beach by about 37 feet (11 m) between the Royal Hawaiian Hotel concrete groin and the Kūhiō Beach crib wall. The project temporarily restored the beach to its 1985 shoreline. Two aging sandbag groin structures were also removed that year. In 2017, beach erosion worsened with high-energy king tides and elevated sea levels. Honolulu's mayor stated: "I'm not
8170-644: The sunset in the sea is visible from mid-September to late March. Half of the beach is marked off for surfers. For some distance into the ocean the water is quite shallow, with numerous rocks on the bottom. The waves can have some force, particularly on windy days. The surf is known for its long rolling break, making it ideal for long boarding, tandem surfing , and beginners. Largely as a result of shoreline development, Waikiki has eight beaches. They are Ft. DeRussy Beach, Duke Kahanamoku Beach, Halekulani Beach, Royal Hawaiian Beach, Kūhiō Beach, Kapiʻolani Beach, Queens Beach, and Kaimana Beach. Waikiki's main thoroughfare
8265-548: The surface of the peristome, or may be projecting and trumpet-shaped. Soft corals have no solid exoskeleton as such. However, their tissues are often reinforced by small supportive elements known as sclerites made of calcium carbonate. The polyps of soft corals have eight-fold symmetry, which is reflected in the Octo in Octocorallia. Soft corals vary considerably in form, and most are colonial. A few soft corals are stolonate , but
8360-454: The trigger ( Cnidocil ). A flap ( operculum ) opens and its stinging apparatus fires the barb into the prey. The venom is injected through the hollow filament to immobilise the prey; the tentacles then manoeuvre the prey into the stomach. Once the prey is digested the stomach reopens allowing the elimination of waste products and the beginning of the next hunting cycle. Many corals, as well as other cnidarian groups such as sea anemones form
8455-466: The various forms often being linked to different types of habitat, with variations in light level and water movement being significant. The body of the polyp may be roughly compared in a structure to a sac , the wall of which is composed of two layers of cells . The outer layer is known technically as the ectoderm , the inner layer as the endoderm . Between ectoderm and endoderm is a supporting layer of gelatinous substance termed mesoglea , secreted by
8550-427: The water where they meet and fertilize to spread offspring. Corals often synchronize their time of spawning. This reproductive synchrony is essential so that male and female gametes can meet. Spawning frequently takes place in the evening or at night, and can occur as infrequently as once a year, and within a window of 10–30 minutes. Synchronous spawning is very typical on the coral reef, and often, all corals spawn on
8645-537: The water's surface and form a microscopic larva called a planula , typically pink and elliptical in shape. A typical coral colony needs to release several thousand larvae per year to overcome the odds against formation of a new colony. Studies suggest that light pollution desynchronizes spawning in some coral species. In areas such as the Red Sea , as many as 10 out of 50 species may be showing spawning asynchrony, compared to 30 years ago. The establishment of new corals in
8740-559: The water's surface before descending to seek a hard surface on the benthos to which they can attach and begin a new colony. The larvae often need a biological cue to induce settlement such as specific crustose coralline algae species or microbial biofilms. High failure rates afflict many stages of this process, and even though thousands of eggs are released by each colony, few new colonies form. During settlement, larvae are inhibited by physical barriers such as sediment, as well as chemical (allelopathic) barriers. The larvae metamorphose into
8835-464: The western Pacific. Carlson developed a set of clearly defined goals and strategic plans, and initiated the coral propagation program. From 1992 to 1994, Carlson oversaw the aquarium's most extensive renovation since 1955. The $ 3.2 million investment from the Legislature enhanced the Aquarium's mission of research, education and conservation through greatly improved exhibits and visitor facilities. In 2000
8930-410: The zooxanthellae is their ability to photosynthesize which supplies corals with the products of photosynthesis, including glucose, glycerol, also amino acids, which the corals can use for energy. Zooxanthellae also benefit corals by aiding in calcification , for the coral skeleton, and waste removal. In addition to the soft tissue, microbiomes are also found in the coral's mucus and (in stony corals)
9025-547: Was established on March 19, 1904, by the Honolulu Rapid Transit Authority, a forerunner of the present-day TheBus . Then known as the Honolulu Aquarium, its purpose was to entice travelers to ride the trolley all the way to the end of the line at Queen Kapiʻolani Park . It was built on land donated by James Bicknell Castle with funds from Charles Montague Cooke and his wife Anna Rice Cooke . In 1955,
#559440