The whale shark (Rhincodon typus) is a slow-moving, filter-feeding carpeting shark and the largest noted extant fish species. The biggest confirmed individual had a duration 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 files for size in the canine kingdom, most notably being certainly 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 waters of the tropical oceans and is rarely found in the water listed below 21 °C (70 °F).[2] Modeling implies a lifespan of about seventy years, but measurements own proven difficult.[9] Whale sharks have substantial mouths and are filter feeders, which is a feeding mode that occurs in only two other fishes, 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 four. 6 m (15 ft) specimen in Table Gulf, South Africa. Andrew Smith, a military doctor associated with British isles troops stationed in Shawl Town, described it the subsequent year.[10] The name "whale shark" identifies the fish's size, getting as large as some species of whales,[11] as well as to its being a filter feeder like baleen whales.
Whale sharks have a mouth 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 it uses to filter supply.[12] Unlike a great many other sharks, whale sharks' teeth are located at the front of the head rather than on the underside in the head.[13] Whale sharks have five significant pairs of gills. Your head is wide and toned with two small sight at the front. Whale sharks will be grey with a white abdomen. Their skin is marked with pale yellow places and stripes which are different to each individual. The whale shark has three prominent ridges along its attributes. Its skin can be about 10 cm (3. dokuz in) thick. The shark has a pair of dorsal bout and pectoral fins. Juveniles' tails have a larger upper fin than the lower b, while the adult tail turns into semilunate. The whale shark's spiracles are just behind their eyes.
The whale shark is the largest non-cetacean canine in the world. The average size of adult whale sharks is projected at 9. 8 m (32 ft) and dokuz t (20, 000 lb).[8] Several individuals over 18 m (59 ft) in length have been reported.[14] The largest approved specimen was caught about 11 November 1949, near Étonné Island, in Karachi, Pakistan. It was 12. 65 meters (41. 5 ft) long, weighed about 21. 5 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 simply no scientific records support their particular existence. In 1868, the Irish natural scientist Edward Perceval Wright obtained a lot of small whale shark individuals in the Seychelles, but claimed to have observed specimens around 15 m (49 ft), and tells of shark specimens surpassing 21 m (69 ft).
In a 1925 publication, Hugh Meters. Smith described a huge creature caught in a bamboo fish trap in Thailand in 1919. The shark was too heavy to pull ashore, but Smith estimated the shark was at least 17 m (56 ft) long, and weighed around 37 capital t. These measurements have been do not forget that to 43 t (95, 000 lb) and a much more precise 17. 98 m (59. 0 ft) in recent times. A shark caught in 1994 off Tainan State, southern Taiwan, reportedly weighed 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 90 tonnes (220, 000 lb). In 1934, a ship named the Maurguani found a whale shark in the southern Pacific Ocean, rammed that, and the shark became trapped on the prow of the cruise ship, supposedly with 4. 6th m (15 ft) on a single side and 12. a couple of m (40 ft) one the other side of the coin.[16] No reliable documentation exists for these says and they remain "fish stories".
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