whale shark hawaii | whale shark in cebu
The whale shark (Rhincodon typus) is a slow-moving, filter-feeding carpet shark and the largest referred to 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 information for size in the dog 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 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 rarely found in the water under 21 °C (70 °F).[2] Modeling implies a lifespan of about seventy years, but measurements include 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 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 some. 6 m (15 ft) specimen in Table Clean, South Africa. Andrew Smith, a military doctor associated with Indian troops stationed in Hat Town, described it the next year.[10] The name "whale shark" refers to the fish's size, being as large as some types 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 m (4. 9 ft) extensive, containing 300 to 450 rows of tiny teeth and 10 filter pads which will it uses to filter feed.[12] Unlike a number of other sharks, whale sharks' jaws are located at the front of the brain rather than on the underside from the head.[13] Whale sharks have five huge pairs of gills. The top is wide and even with two small sight at the front. Whale sharks are grey with a white abdomen. Their skin is noted with pale yellow locations and stripes which are unique to each individual. The whale shark has three prominent ridges along its sides. Its skin can be approximately 10 cm (3. hunting for in) thick. The shark has a pair of dorsal fins and pectoral fins. Juveniles' tails have a larger superior fin than the lower b, while the adult tail becomes semilunate. The whale shark's spiracles are just behind their eyes.
The whale shark is the largest non-cetacean animal in the world. The average size of adult whale sharks is believed at 9. 8 m (32 ft) and dokuz t (20, 000 lb).[8] Several specimens over 18 m (59 ft) in length have been reported.[14] The largest verified specimen was caught on 11 November 1949, near Humor Island, in Karachi, Pakistan. It was 12. 65 m (41. 5 ft) longer, weighed about 21. five 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 no scientific records support the existence. In 1868, the Irish natural scientist Edward Perceval Wright obtained many small whale shark individuals in the Seychelles, but said to have observed specimens above 15 m (49 ft), and tells of shark individuals surpassing 21 m (69 ft).
In a 1925 publication, Hugh M. Smith described a huge canine caught in a bamboo fish trap in Thailand in 1919. The shark was too heavy to pull ashore, nonetheless Smith estimated the shark was at least 17 meters (56 ft) long, and weighed around 37 big t. These measurements have been do not forget that to 43 t (95, 000 lb) and a far more precise 17. 98 meters (59. 0 ft) lately. A shark caught in 1994 off Tainan County, 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 metre distances (75 ft) and 85 tonnes (220, 000 lb). In 1934, a dispatch named the Maurguani came across a whale shark inside the southern Pacific Ocean, rammed this, and the shark became caught on the prow of the dispatch, supposedly with 4. 6 m (15 ft) using one side and 12. 2 m (40 ft) on the other.[16] No trusted documentation exists for these boasts and they remain "fish stories".
Comments
Post a Comment