Distribution and habitat | whale shark 360 video

Distribution and habitat | whale shark 360 video

Distribution and habitat

 

The whale shark inhabits all of the tropical and warm-temperate waters. The fish is primarily pelagic, living in the open sea but not in the increased depths of the ocean, though it is known to occasionally dive to depths of as much as one particular, 800 metres (5, nine hundred ft).|17| Periodic feeding aggregations occur in several coastal sites including the southern and eastern regions of South Africa; Saint Helena Tropical isle in the South Atlantic Sea; 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 Philippines; 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 State Park in Nabire, Papua, Indonesia; Flores Island, Philippines; Nosy Be in Madagascar; away Tofo Beach near Inhambane in Mozambique; the Tanzanian islands of Mafia, Pemba, Zanzibar; Gulf of Tadjoura in Djibouti, the Ad Dimaniyat Islands in the Gulf of Oman and 's Hallaniyat islands in the Arabian Sea; and, very rarely, Eilat, Israel and Aqaba, The nike jordan. Although typically seen overseas, it has been found closer to land, entering lagoons or coral formations atolls, and near the teeth of estuaries and waterways. Its range is generally limited to about 30° latitude. It truly 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 kilometres (93 mi) off the seacoast of Karachi, Pakistan. The length of the specimen was said to be between 11 and 12 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 major gatherings of whale fishes recorded.|22| Aggregations in that area are one of the most reliable seasonal gatherings reputed for whale sharks, with vast quantities occurring in most years among May and September. Linked ecotourism has grown rapidly to unsustainable levels.|23|

Not mating nor pupping of whale sharks has been witnessed.

 

The capture of a girl in July 1996 that was pregnant with three hundred pups indicated whale fishes are ovoviviparous.|9||24||25| The eggs remain in the body and the females give birth to live adolescent which are 40 to 62 cm (16 to twenty-four in) long. Evidence indicates the pups are not all of the born at once, but rather the feminine retains sperm from one pairing and produces a steady stream of pups over a lengthened period.|26| That they reach sexual maturity at around 30 years and their life expectancy 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 actual living specimen of the whale shark. The young shark, measuring only 38 cm (15 in), was found with its tail tied to a stake at a seaside in Pilar, Sorsogon, Korea, and was released into the outrageous. Based on this discovery, some scientists no longer believe this place is just a feeding ground; this web site may be a birthing ground, as well. Both young whale sharks and pregnant females have been seen in the oceans of Saint Helena inside the South Atlantic Ocean, where numerous whale sharks could be spotted during the summer.

The whale shark is a filtration feeder - one of only 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 reddish crab larvae |30| and small nektonic life, such as small squid or fish. It also passes on clouds of ovum during mass spawning of fish and corals.|31| The many rows of vestigial teeth play no part in feeding. Feeding takes place either by ram filtering, in which the animal opens their mouth and swims onward, pushing water and foodstuff into the mouth, or by effective suction feeding, in which the creature opens and closes it is mouth, sucking in volumes of water that are therefore expelled through the gills. In both cases, the filter pads serve to separate food from water. These exceptional, black sieve-like structures will be presumed to be modified gill rakers. Food separation in whale sharks is by cross-flow filtration, in which the water journeys nearly parallel to the filter pad surface, not perpendicularly through it, before moving to the outside, while denser food particles continue to the back with the throat.|32| This really is an extremely efficient filtration method that minimizes fouling from the filter pad surface. Whale sharks have been observed "coughing", presumably to clear a build-up of particles from the filtration pads. Whale sharks move to feed and possibly to reproduce.

2019-01-10 21:46:41

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