Associated with the coral reef environment, the whitetip reef shark is found throughout the Indian and Pacific Oceans. Hence, the origin of its common name. [17], Mating is initiated when up to five males follow closely behind a female and bite at her fins and body, possibly cued by pheromones indicating the female's readiness. Globally, this fish is the only species in the genus Triaenodon and it is found in all Mexican oceanic waters of the Pacific Ocean. At night, whitetip reef sharks become active and hunt for bottom-dwelling prey hiding in coral reef holes and crevices. In many cases, the female resists by pressing her belly against the bottom and arching her tail; this may reflect mate choice on her part. The whitetip reef shark mainly hunts at night, catching crustaceans, octopi and reef fish that it extracts from crevasses with a great deal of dexterity. Once abundant, whitetip reef shark numbers depleted noticeably from 1985 to 2005 due to overfishing in certain areas.2 Their shallow water habitats (33 to 131 feet/10 to 40 m) have made them susceptible to becoming bycatch in gillnet and longline fisheries, as well.3 Whitetip reef sharks are considered near threatened with extinction due to their small litter size, late age of maturity and coral reef habitat loss. In this episode of Shark Academy, Jonathan introduces the Whitetip Reef shark! 3. [5] Morphological and molecular phylogenetic analyses suggest the whitetip reef shark is grouped with the lemon sharks (Negaprion) and the sliteye shark (Loxodon) in occupying an intermediate position on the carcharhinid evolutionary tree, between most basal genera (Galeocerdo, Rhizoprionodon, and Scoliodon) and the most derived (Carcharhinus and Sphyrna). [3] Later in 1837, Johannes Müller and Friedrich Henle moved this species into its own genus Triaenodon, from the Greek triaena meaning "trident", and odon meaning "tooth". N00014-68-C-0138. Each shark hunts for itself and in competition with the others in its group. However, spear fishers are at risk of being bitten by one attempting to steal their catch. Find high-quality stock photos that you won't find anywhere else. [5] In some places, local whitetip reef sharks have learned to associate the sound of a speargun discharge or a boat dropping anchor with food and respond within seconds. [17] Parturition occurs from May to August (autumn and winter) in French Polynesia, in July (summer) off Enewetak Atoll, and in October (summer) off Australia. Whitetip reef sharks are regarded as guardian spirits, or “aumakua,” in some Hawaiian traditions.1. Make your traveling experience unforgettable and volunteer with Whitetip Reef Sharks! The oceanic whitetip shark is found throughout the world in tropical and sub-tropical waters.It is a pelagic species, generally remaining offshore in the open ocean, on the outer continental shelf, or around oceanic islands in water depths greater than 600 feet. However, unlike those and most other sharks, it does not need to constantly swim to force water through its gills to breathe, and can rest on the sea bottom without moving. In caves, whitetip reef sharks pile on top of each other like logs, lying motionless for hours because this species does not need to move to breathe. facebook; twitter; google+; email The habitat preferences of this species overlap those of the other two, though it does not tend to frequent very shallow water like the blacktip reef shark, nor the outer reef like the grey reef shark. 6. Habitat: [25], The whitetip reef shark is taken by fisheries operating off Pakistan, India, Sri Lanka, Madagascar, and likely elsewhere, using longlines, gillnets, and trawls. 5. Like most sharks, this species has two dorsal fins. As a hunting method, whitetip reef sharks sometimes chase and trap their prey in crevices where they can easily jam their slim bodies and snouts to catch it.1 Like all sharks, whitetip reef sharks rely on electroreceptors in their snouts to detect the electrical charges of nearby prey.3 Although they are formidable predators, whitetip reef sharks are preyed upon by larger fish, such as tiger sharks and giant grouper. [10][11] While resting during the day, these sharks have been observed being cleaned by the wrasse Bodianus diplotaenia and the goby Elacatinus puncticulatus. This species is easily spotted due to its curious, irregular, and waving swimming style and of course, the white tip … Along with the Blacktip Reef Shark and Gray Reef Shark, it is one of the most frequent sharks in the Indo-Pacific. [2][8], Important predators of the whitetip reef shark include tiger sharks (Galeocerdo cuvier), Galapagos sharks (Carcharhinus galapagensis), and possibly also silvertip sharks (Carcharhinus albimarginatus), though they usually occur at depths greater than those favored by whitetip reef sharks. Whitetip reef sharks are known for using their slender bodies to maneuver through caves and crevices throughout their coral reef habitats in … The maximum weight ever recorded was 40.3 pounds (18.3 kg) and the maximum length ever recorded was 7 feet (2.1 m), but a length over 5.3 feet (1.6 m) is extremely rare. The Whitetip Reef is the second smallest shark, and is overall the second weakest shark in the game. [5] Known parasites of the whitetip reef shark include the copepod Paralebion elongatus and the praniza (parasitic) larvae of the isopod Gnathia grandilaris. However, there is a risk of ciguatera poisoning, a type of food poisoning present in reef fish (Randall, 1977). Oceanic whitetip sharks are one of the more dangerous sharks to humans. The whitetip reef shark (Triaenodon obesus) is a species of requiem shark, in the family Carcharhinidae, and the only member of its genus, Triaenodon. The daytime home range of a whitetip reef shark is limited to approximately 0.05 km2 (0.019 sq mi); at night this range increases to 1 km2 (0.39 sq mi). [22] Its restricted habitat, low dispersal, and slow reproduction are factors that limit this shark's capacity for recovering from overfishing. This outclasses Porbeagle in speed and boost, and can help explore the map. A small shark that does not usually exceed 1.6 m (5.2 ft) in length, this species is easily recognizable by its slender body and short but broad head, as well as tubular skin flaps beside the nostrils, oval eyes with vertical pupils, and white-tipped dorsal and caudal fins. Whitetip reef shark in waters off the coast of Borneo. Diet. Smaller sharks, such as whitetip reef sharks, are most often encountered around coral heads and ledges with high vertical relief, resting in caves, or under coral ledges during the day to avoid predation from larger sharks and groupers. In the Hawaiian Islands, it can be observed resting in caves or under ledges for an extended period. and R.H. Johnson. They are known to have attacked survivors of ship and plane wrecks at sea, and are suspected to be responsible for several unrecorded human fatalities (ISAF 2018). [5] This species is most common at a depth of 8–40 m (26–131 ft). [2] On occasion, they may enter water less than 1 m deep, and there is an exceptional record of a whitetip reef shark being captured from a depth of 330 m (1,080 ft) in the Ryukyu Islands. Whitetip Reef Shark The Whitetip Reef Shark is also known as the Triaenodon Obesus. It is typically found on or near the bottom in clear water, at a depth of 8–40 m (26–131 ft). Researchers place three species, the blacktip, grey, and Caribbean, in the taxonomic genus Carcharhinus. Whitetip reef shark cruising coral reef waters. Whitetip reef sharks mate via internal fertilization and give birth to one to five pups per litter.3 They reach sexual maturity at the relatively late age2 of 8 years and live until the maximum age of at least 25 years.3. Unlike other requiem sharks, which rely on ram ventilation and must constantly swim to breathe, this shark can pump water over its gills and lie still on the bottom. Overall. [2] In Hawaiian mythology, the fidelity (i.e. [21] The newborns measure 52–60 cm (20–24 in) long and have relatively longer caudal fins than adults. December 2019. The white tipped reef shark (Triaenodon obesus), is a requiem shark of the family Carcharhinidae, the only member of the genus ‘Triaenodon’.. White Tipped Reef sharks have rounded snouts and are more common throughout Galapagos than the other species. 2. There is no ridge between the first and second dorsal fins. [2] Other common names for this shark include blunthead shark, light-tip shark, reef whitetip shark, and whitetip shark. Animals Network Team The term “Reef Shark” applies to four different species. The whitetip reef shark (Triaenodon obesus) is a species of requiem shark, in the family Carcharhinidae, and the only member of its genus. [4] The whitetip reef shark has a slim body and a short, broad head. Curre… However, more recent research indicates that the teeth belonged to a mackerel shark, and that this species has never colonized the Atlantic. The oceanic whitetip shark is distributed worldwide in epipelagic tropical and subtropical waters between 30°N and 35°S latitude (Baum et al. [5], The whitetip reef shark is one of the three most common sharks inhabiting the reefs of the Indo-Pacific, the other two being the blacktip reef shark (Carcharhinus melanopterus) and the grey reef shark (Carcharhinus amblyrhynchos). The whitetip reef shark (Triaenodon obesus) is a species of requiem shark, in the family Carcharhinidae, and the only member of its genus. This species is viviparous, in which the developing embryos are sustained by a placental connection to their mother. (Smale, 2009) It has been reported by tropical fisheries multi-species shark catch reports that the whitetip reef shark is often taken inline or from shallow water net trawls. Acoustic studies on sharks: Rangiroa Atoll, July 1969. Triaenodon apicalis Whitley, 1939. These beautiful sharks are central members of the coral reef community and are also an important part of Native Hawaiian culture. [2][17] Females give birth while swimming, making violent twists and turns of their bodies; each pup takes under an hour to fully emerge. The whitetip reef shark is a moderately sized shark, slender with a characteristic white-tipped dorsal and tail fins. Sign up today to get weekly updates and action alerts from Oceana. (2006). [15] Multiple sharks may target the same prey item, covering every exit route from a particular coral head. The tips of the first dorsal fin and upper caudal fin lobe, and sometimes also the second dorsal fin and lower caudal fin lobe, are bright white. The photos you provided may be used to improve Bing image processing services. Furthermore, populations in no-take zones, where boats are allowed but fishing prohibited, exhibit levels of depletion comparable to fishing zones due to poaching. As Rüppell did not originally designate a holotype, in 1960 a 31-cm-long specimen caught off Jeddah, Saudi Arabia, was made the species lectotype. After mating, followed by 12 months of gestation, the female delivers a clutch of one to five baby sharks measuring roughly 50 cm. They often return to the same home cave for days or weeks at a time, sometimes longer.2, Whitetip reef sharks grow to an average length of 5.3 feet (1.6 m). Sign our petition to tell GrubHub to take shark fin off the menu now – before the ocean’s most iconic predators disappear. The whitetip reef shark is a requiem shark, meaning it is a member of the Carcharhinidae family, like the bull shark, grey reef shark, tiger shark and lemon shark. Whitetip reef sharks do not have to move to breathe and can be found lying motionless on the seafloor. During the day, whitetip reef sharks spend much of their time resting inside caves. 1. This shark is a nocturnal feeder, and likes to prey on Bony Fishes and large crustaceans. [17] In June 2018 the New Zealand Department of Conservation classified the whitetip reef shark as "Vagrant" under the New Zealand Threat Classification System. [5] Another study at Rangiroa Atoll in French Polynesia found that, after more than three years, around 40% of the originally tagged sharks were still present on the same reef where they were first captured. It is the only shark in Hawaiian waters that has the ability to stop swimming and can rest for long periods at a time, making it more commonly observed by divers. The whitetip reef shark is a slim, medium-sized shark characterized by its white-tipped dorsal and tail fins that give this species its name. This outclasses Porbeagle in speed and boost, and can help explore the map. Download high quality 4K, HD, SD & more. Gallery [2] His choice of the specific epithet obesus was curious, given that this shark is actually quite slender. This species is easily spotted due to its curious, irregular, and waving swimming style and of course, the white tip on its dorsal fin. Whitetip Reef Shark Description Dentition. The whitetip reef shark is commonly displayed in public and private aquaria around the world, and in Brazil, multiple new public aquariums have resulted in an increase of these sharks imported into the country. [26], CS1 maint: multiple names: authors list (. One of the most common sharks found on Indo-Pacific coral reefs, the whitetip reef shark occurs as far west as South Africa and as far east as Central America. [2] The whitetip reef shark swims with strong undulations of its body, and unlike other requiem sharks can lie motionless on the bottom and actively pump water over its gills for respiration. The shark has an average size of around 1.5 metres. As such, Whitetip Reef Shark is recommendable for only collective players. NOTE The shark has been implicated in a number of unprovoked attacks on swimmers and divers. Oceanic whitetip sharks have a strong preference for the surface mixed layer in warm waters above 20°C, and are therefore a surface-dwelling shark. Mature females have a single functional ovary, on the left side, and two functional uteruses. Demographic models indicate that these depleted populations will continue to decline by 6.6–8.3% per year without additional conservation measures. Though seen alone in-game, real-life … [8] They prefer very clear water and rarely swim far from the bottom. The white tipped reef shark (Triaenodon obesus), is a requiem shark of the family Carcharhinidae, the only member of the genus ‘Triaenodon’.. White Tipped Reef sharks have rounded snouts and are more common throughout Galapagos than the other species. [8] Despite their nocturnal habits, whitetip reef sharks will hunt opportunistically in daytime. [2], Associated almost exclusively with coral reef habitats, whitetip reef sharks are most often encountered around coral heads and ledges with high vertical relief, and additionally over sandy flats, in lagoons, and near drop-offs to deeper water. The Gili Islands are special for countless reasons however one of the most special ones is that they play host to a Whitetip reef shark nursery. They place the fourth, the more distantly related whitetip species, in the taxonomic genus Triaenodon. Species data. Alternatively, it is rather clumsy when attempting to take food suspended in open water. The oceanic whitetip shark (Carcharhinus longimanus), also known as Brown Milbert's sand bar shark, brown shark, lesser white shark, nigano shark, oceanic white-tipped whaler, and silvertip shark, is a large pelagic requiem shark inhabiting tropical and warm temperate seas. Whitetip Reef Shark Future and Conservation: The Whitetip Reef shark is taken by fisheries longlines, gillnets, and trawls. [2] This species is most active at night or during slack tide, and spends much of the day resting inside caves singly or in small groups, arranged in parallel or stacked atop one another. The Whitetip Reef Shark is a relatively small-sized requiem shark in the Carcharhinidae family, and the only member of its genus. The Whitetip Reef Shark is the most common shark species found at the Galapagos Islands. Habitat. The mouth of the whitetip reef shark shows a noticeable downward slant which gives it a disgruntled look. [6], The whitetip reef shark is distributed widely across the entire Indo-Pacific region. [2], The first dorsal fin is positioned well back on the body, closer to the pelvic than the pectoral fins. Whitetip Reef Sharks are one of the most common shark species and mostly inhabit coral reefs.You can find them all over the world: the Galapagos Islands, Costa Rica, Australia - You name it! The Whitetip Reef Shark, or White Tip Reef Shark (Triaenodon obesus), is a small species of shark found only in Endless Ocean: Blue World. We are restoring the world’s wild fish populations to serve as a sustainable source of protein for people. [9], Whitetip reef sharks generally remain within a highly localized area; only rarely do they undertake long movements, wandering for a while before settling down somewhere new. Find Whitetip Reef Shark stock video, 4k footage, and other HD footage from iStock. Associated with the coral reef environment, the whitetip reef shark is found throughout the Indian and Pacific Oceans. It is the only shark in Hawaiian waters that has the ability to stop swimming and can rest for long periods at a time, making it more commonly observed by divers. Once engaged, the sharks sink to the bottom, whereupon the male (or males) rotates one of his claspers forward, inflates the associated siphon sac (a subcutaneous abdominal organ that takes in seawater that is used to flush sperm into the female), and attempts to make contact with the female's vent. The snout is flattened and blunt, with large flaps of skin in front of the nares that are furled into tubes. It is most threatened in heavily fished tropical areas. The maximum length this species attains is often given as 2.1 m (6.9 ft), though this was originally based on visual observations and may be dubious. [6] A whitetip reef shark can survive for six weeks without food. The eyes are small and oval with vertical pupils and prominent ridges above, and are often followed by a small notch. Footage starting at $15. The Reef Whitetip is one of the three most common sharks on Indo-Pacific coral reefs, the other two being the Blackfin Reef Shark (Carcharhinus melanopterus) and the Grey Reef Shark (Carcharhinus amblyrhynchos). Whitetip reef sharks are frequently spotted in the coral reefs of Hawaiian Islands Humpback Whale National Marine Sanctuary. Ongoing fishing and the harvesting of biological resources continues to threaten this shark. The whitetip reef shark is commonly displayed in public and private aquaria around the world, and in Brazil, multiple new public aquariums have resulted in an increase of these sharks imported into the country. [9] As of 2008, the International Shark Attack File lists two provoked and three unprovoked attacks to this species. One whitetip reef shark was found in the stomach of a giant grouper, and it is likely that other, larger carcharhinid sharks prey on it. Whitetip reef sharks are also vulnerable to predation from humans. Carcharias obesus Rüppell, 1837 It is named for the tip of its dorsal fin, which is white, and its habit of living around reefs. The whitetip reef shark is a curious species that often approaches divers. The slow reproductive rate and limited habitat preferences of this species renders its populations vulnerable to overfishing. [24] Whitetip reef sharks are well-suited to ecotourism diving, and with conditioning they can be hand-fed by divers. This species is caught for food, though ciguatera poisoning resulting from its consumption has been reported. It is not considered dangerous to humans. In the eastern Pacific, it occurs from Costa Rica to Panama, and off the Galápagos Islands. At night, whitetip reef sharks emerge to hunt bony fishes, crustaceans, and octopus in groups, their elongate bodies allowing them to force their way into crevices and holes to extract hidden prey. "loyalty") of whitetip reef sharks to certain areas of the reef for years at a time may have inspired belief in ʻaumākua, the spirits of family ancestors that take animal form and protect their descendants. Danger to Humans. One study at Johnston Atoll found that none of the sharks examined had moved more than 3 km (1.9 mi) away from their original capture location over periods of up to a year. Whitetip reef sharks live communally in small home ranges anywhere from 0.2 to 1.8 miles (0.3 to 3 km). The coloration is grayish to brownish above and white below, with a pattern of scattered small, dark spots unique to each individual. As such, Whitetip Reef Shark is recommendable for only collective players. Like a lot of sharks, the whitetip is viviparous, giving birth to live young that have grown from eggs held inside the mother’s womb. The Whitetip Reef Shark is also known as the Triaenodon Obesus. STATUS In 2013, the Oceanic whitetip shark was placed on CITES Appendix II.
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