The whale shark (Rhincodon typus) is a slow-moving, filter-feeding floor covering shark and the largest regarded extant fish species. The greatest confirmed individual had a period of 12. 65 m (41. 5 ft) and a weight of about 21. 5 t (47, 000 lb).[8] The whale shark holds many information for size in the canine kingdom, most notably being by far the largest living nonmammalian vertebrate. It is the sole member of the genus Rhincodon and the only extant member of the family Rhincodontidae which usually belongs to the subclass Elasmobranchii inside the class Chondrichthyes. Before 1984 it was classified as Rhiniodon into Rhinodontidae.
The whale shark is found in open seas of the tropical oceans and it is rarely found in the water down below 21 °C (70 °F).[2] Modeling advises a lifespan of about 70 years, but measurements have got proven difficult.[9] Whale sharks have substantial mouths and are filter feeders, which is a feeding mode that occurs in only two other sharks, the megamouth shark as well as 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 four. 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 this year.[10] The name "whale shark" refers to the fish's size, getting as large as some types of whales,[11] and also 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 350 rows of tiny teeth and 10 filter pads which will it uses to filter supply.[12] Unlike a number of other sharks, whale sharks' mouths are located at the front of the mind rather than on the underside from the head.[13] Whale sharks have five significant pairs of gills. The head is wide and even with two small sight at the front. Whale sharks are grey with a white tummy. Their skin is proclaimed with pale yellow places and stripes which are unique to each individual. The whale shark has three prominent ridges along its facets. Its skin can be about 10 cm (3. hunting for in) thick. The shark has a pair of dorsal fins and pectoral fins. Juveniles' tails have a larger high fin than the lower b, 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 estimated at 9. 8 m (32 ft) and hunting for t (20, 000 lb).[8] Several specimens over 18 m (59 ft) in length have been reported.[14] The largest verified specimen was caught about 11 November 1949, near Effaré Island, in Karachi, Pakistan. It was 12. 65 m (41. 5 ft) long, weighed about 21. 5 various t (47, 000 lb), and had a girth of 7 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 their very own existence. In 1868, the Irish natural scientist Edward cullen Perceval Wright obtained a number of small whale shark individuals in the Seychelles, but believed to have observed specimens around 15 m (49 ft), and tells of shark individuals surpassing 21 m (69 ft).
In a 1925 publication, Hugh M. Smith described a huge animal 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 m (56 ft) long, and weighed around 37 to. These measurements have been overstated to 43 t (95, 000 lb) and an even more precise 17. 98 meters (59. 0 ft) in recent years. A shark caught in 1994 off Tainan Region, southern Taiwan, reportedly acessed 35. 8 t (79, 000 lb).[15] There have even recently been unverified claims of whale sharks of up to 23 metres (75 ft) and 85 tonnes (220, 000 lb). In 1934, a ship named the Maurguani came upon a whale shark inside the southern Pacific Ocean, rammed this, and the shark became stuck on the prow of the cruise ship, supposedly with 4. six m (15 ft) on one side and 12. two m (40 ft) one the other side of the coin.[16] No trustworthy documentation exists for these says and they remain "fish stories".
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