| whale shark live
Distribution and habitat
The whale shark inhabits every tropical and warm-temperate seas. The fish is mostly pelagic, living in the wide open sea but not in the increased depths of the ocean, even though it is known to occasionally dive to depths of as much as one particular, 800 metres (5, nine hundred ft).|17| In season feeding aggregations occur by several coastal sites like the southern and eastern parts of South Africa; Saint Helena Tropical isle in the South Atlantic Marine; Gulf of Tadjoura in Djibouti, Gladden Spit in Belize; Ningaloo Reef in Western Australia; Kerala|18|, Lakshadweep, Gulf of Kutch and Saurashtra coast of Gujarat in India;|19| Útila in Honduras; Southern Leyte; Donsol, Pasacao and Batangas in the Thailand; off Isla Mujeres and Isla Holbox in Yucatan and Bahía de los Ángeles in Baja California, México; Maamigili island, Maldives; Ujung Kulon National Park in Indonesia; Cenderawasih Bay Country wide Park in Nabire, Papua, Indonesia; Flores Island, Indonesia; Nosy Be in Madagascar; off Tofo Beach near Inhambane in Mozambique; the Tanzanian islands of Mafia, Pemba, Zanzibar; Gulf of Tadjoura in Djibouti, the Advertising Dimaniyat Islands in the Gulf of Oman and Al Hallaniyat islands in the Arabian Sea; and, very rarely, Eilat, Israel and Aqaba, Michael jordan. Although typically seen overseas, it has been found closer to land, entering lagoons or coral atolls, and near the teeth of estuaries and rivers. Its range is generally restricted to about 30° latitude. It really is capable of diving to depths of at least 1, 286 m (4, 219 ft),|20| and is migratory.|9| On 7 February 2012, a large whale shark was found floating 150 kms (93 mi) off the coastline of Karachi, Pakistan. The size of the specimen was said to be between 11 and doze m (36 and 39 ft), with a weight of around 15, 000 kg (33, 000 lb).|21|
In 2011, more than 400 whale sharks gathered off the Yucatan Coast. It was one of the greatest gatherings of whale sharks recorded.|22| Aggregations in that area are one of the most reliable seasonal gatherings known for whale sharks, with thousands and thousands occurring in most years among May and September. Linked ecotourism has grown rapidly to unsustainable levels.|23|
Neither of them mating nor pupping of whale sharks has been noticed.
The capture of a woman in July 1996 that was pregnant with three hundred pups indicated whale fishes are ovoviviparous.|9||24||25| The ovum remain in the body and the females give birth to live fresh which are 40 to 62 cm (16 to twenty-four in) long. Evidence suggests the pups are not most born at once, but rather the female retains sperm from one pairing and produces a steady stream of pups over a long term period.|26| They will reach sexual maturity for around 30 years and their life is an estimated 70|9| to 100 years.|27|
On 7 March 2009, marine scientists in the Philippines discovered what is believed to be the tiniest living specimen of the whale shark. The young shark, measuring only 38 centimeter (15 in), was observed with its tail tied to a stake at a seashore in Pilar, Sorsogon, Thailand, and was released into the untamed. Based on this discovery, a few scientists no longer believe this place is just a feeding ground; this web site may be a birthing earth, as well. Both young whale sharks and pregnant females have been seen in the seas of Saint Helena inside the South Atlantic Ocean, in which numerous whale sharks can be spotted during the summer.
The whale shark is a filter feeder - one of just three known filter-feeding shark species (along with the basking shark and the megamouth shark). It feeds on plankton including copepods, krill, fish eggs, Christmas Island purple crab larvae |30| and small nektonic life, such as small squid or fish. It also enters on clouds of ova during mass spawning of fish and corals.|31| The many rows of vestigial teeth play no position in feeding. Feeding arises either by ram purification, in which the animal opens their mouth and swims ahead, pushing water and foodstuff into the mouth, or by effective suction feeding, in which the pet opens and closes the mouth, sucking in sizes of water that are then expelled through the gills. In both cases, the filtration system pads serve to separate food from water. These one of a kind, black sieve-like structures are presumed to be modified gill rakers. Food separation in whale sharks is by cross-flow filtration, in which the water travels nearly parallel to the filtration pad surface, not perpendicularly through it, before transferring to the outside, while denser food particles continue to the back of the throat.|32| This can be an extremely efficient filtration approach that minimizes fouling in the filter pad surface. Whale sharks have been observed "coughing", presumably to clear a build-up of particles from the filter pads. Whale sharks migrate to feed and possibly to reproduce.
2019-01-10 23:12:50
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