The whale shark (Rhincodon typus) is a slow-moving, filter-feeding carpeting shark and the largest referred to extant fish species. The greatest confirmed individual had a length of 12. 65 m (41. 5 ft) and a weight of about 21. 5 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 only extant member of the family Rhincodontidae which will 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 is also rarely found in the water listed below 21 °C (70 °F).[2] Modeling implies a lifespan of about 70 years, but measurements have got proven difficult.[9] Whale sharks have very large mouths and are filter feeders, which is a feeding mode that happens in only two other fishes, the megamouth shark as well as the basking shark. They supply 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 United kingdom troops stationed in Shawl Town, described it the following year.[10] The name "whale shark" identifies the fish's size, being 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 area that can be 1 . 5 meters (4. 9 ft) vast, containing 300 to three hundred and fifty rows of tiny teeth and 10 filter pads which will it uses to filter give.[12] Unlike various other sharks, whale sharks' lips are located at the front of the brain rather than on the underside in the head.[13] Whale sharks have five large pairs of gills. Your head is wide and toned with two small sight at the front. Whale sharks are grey with a white abdominal. Their skin is marked with pale yellow spots and stripes which are exclusive to each individual. The whale shark has three prominent ridges along its attributes. Its skin can be up to 10 cm (3. dokuz 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 it is eyes.
The whale shark is the largest non-cetacean dog in the world. The average size of adult whale sharks is projected at 9. 8 m (32 ft) and on the lookout for t (20, 000 lb).[8] Several individuals over 18 m (59 ft) in length have been reported.[14] The largest verified specimen was caught on 11 November 1949, near Étonné Island, in Karachi, Pakistan. It was 12. 65 meters (41. 5 ft) very 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 inside the popular literature, but simply no scientific records support the existence. In 1868, the Irish natural scientist Edward Perceval Wright obtained many small whale shark specimens in the Seychelles, but advertised to have observed specimens above 15 m (49 ft), and tells of shark specimens surpassing 21 m (69 ft).
Within a 1925 publication, Hugh Meters. Smith described a huge canine 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 an even more precise 17. 98 m (59. 0 ft) in recent years. A shark caught in 1994 off Tainan Local, southern Taiwan, reportedly considered 35. 8 t (79, 000 lb).[15] There have even recently been unverified claims of whale sharks of up to 23 metre distances (75 ft) and 75 tonnes (220, 000 lb). In 1934, a mail named the Maurguani came upon a whale shark in the southern Pacific Ocean, rammed that, and the shark became stuck on the prow of the cruise ship, supposedly with 4. 6 m (15 ft) on one side and 12. a couple of m (40 ft) one the other side of the coin.[16] No reputable documentation exists for these says and they remain "fish stories".
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