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The whale shark (Rhincodon typus) is a slow-moving, filter-feeding carpeting shark and the largest referred to extant fish species. The biggest confirmed individual had a length of 12. 65 m (41. 5 ft) and a weight of about 21. a few t (47, 000 lb).[8] The whale shark holds many documents for size in the pet kingdom, most notably being probably the largest living nonmammalian vertebrate. It is the sole member of the genus Rhincodon and the just extant member of the family Rhincodontidae which usually belongs to the subclass Elasmobranchii in the class Chondrichthyes. Before 1984 it was classified as Rhiniodon into Rhinodontidae.
The whale shark is found in open seas of the tropical oceans which is rarely found in the water beneath 21 °C (70 °F).[2] Modeling implies a lifespan of about 70 years, but measurements own proven difficult.[9] Whale sharks have huge mouths and are filter feeders, which is a feeding mode that occurs in only two other sharks, the megamouth shark plus the basking shark. They give almost exclusively on plankton and small fishes, and pose no threat to humans.
The species was distinguished in April 1828 after the harpooning of a 5. 6 m (15 ft) specimen in Table Gulf, South Africa. Andrew Smith, a military doctor associated with Indian troops stationed in Cape Town, described it the following year.[10] The name "whale shark" refers to the fish's size, staying as large as some species of whales,[11] and to its being a filter feeder like baleen whales.
Whale sharks have a oral cavity that can be 1 . 5 m (4. 9 ft) wide, containing 300 to three hundred and fifty rows of tiny teeth and 10 filter pads which usually it uses to filter give.[12] Unlike many other sharks, whale sharks' jaws are located at the front of the mind rather than on the underside in the head.[13] Whale sharks have five large pairs of gills. The head is wide and smooth with two small sight at the front. Whale sharks are grey with a white abdomen. Their skin is marked with pale yellow places and stripes which are unique to each individual. The whale shark has three dominant ridges along its attributes. Its skin can be up to 10 cm (3. 9 in) thick. The shark has a pair of dorsal fins and pectoral fins. Juveniles' tails have a larger superior fin than the lower fin, while the adult tail becomes semilunate. The whale shark's spiracles are just behind the eyes.
The whale shark is the largest non-cetacean canine in the world. The average size of adult whale sharks is believed at 9. 8 meters (32 ft) and hunting for t (20, 000 lb).[8] Several individuals over 18 m (59 ft) in length have been reported.[14] The largest approved specimen was caught on 11 November 1949, near Espumarajo Island, in Karachi, Pakistan. It was 12. 65 meters (41. 5 ft) much time, weighed about 21. a few t (47, 000 lb), and had a girth of seven m (23 ft).[8] Stories exist of vastly larger specimens -- quoted lengths of 18 m (59 ft) and 45. 5 t (100, 000 lb) are common in the popular literature, but zero scientific records support all their existence. In 1868, the Irish natural scientist Edward cullen Perceval Wright obtained several small whale shark individuals in the Seychelles, but stated to have observed specimens in excess of 15 m (49 ft), and tells of shark specimens surpassing 21 m (69 ft).
Within a 1925 publication, Hugh M. Smith described a huge dog caught in a bamboo seafood trap in Thailand in 1919. The shark was too heavy to pull ashore, although Smith estimated the shark was at least 17 meters (56 ft) long, and weighed around 37 testosterone levels. These measurements have been do not forget that to 43 t (95, 000 lb) and a lot more precise 17. 98 meters (59. 0 ft) in recent times. A shark caught in 1994 off Tainan County, southern Taiwan, reportedly acessed 35. 8 t (79, 000 lb).[15] There have even been unverified claims of whale sharks of up to 23 metre distances (75 ft) and 95 tonnes (220, 000 lb). In 1934, a dispatch named the Maurguani found a whale shark in the southern Pacific Ocean, rammed this, and the shark became trapped on the prow of the dispatch, supposedly with 4. 6 m (15 ft) on a single side and 12. a couple of m (40 ft) on the other.[16] No dependable documentation exists for these says and they remain "fish stories".
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