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Sand tiger sharks |
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Scientific name: Carcharias taurus
Sand tiger sharks are fierce-looking sharks thanks to their rows of ragged, fang-like teeth. They are generally placid during daylight hours but become voracious hunters at nightfall. Sand tigers are fairly large, stocky sharks with blunt snouts and large, unserrated teeth. Their skin ranges from a sandy-brown to grey-brown colour and they have dark spots, which fade as they mature. Sandtiger sharks live at all water levels as well as the surf zone and reefs. They are found mostly near coastlines, from the surface down to depths of 3,900 ft (1,200 m). Sand tigers inhabit the Atlantic, Pacific and Indian Ocean and are sometimes encountered in the Mediterranean. Sand tigers are sometimes found in groups and have been known to herd prey. They feed on bony fish, rays, other sharks, crustaceans, squid and octopus. Sand tigers sharks are slow but strong swimmers, and are active at night. They gulp air at the water surface, which they hold in their stomach to achieve buoyancy. The sand tiger sharks are born through a rather strange way. They are Oviphagous. During reproduction, several embryos develop in the mother at different rates and females have two uterine chambers. Developing embryos are cannibalistic and the strongest/biggest one eats its siblings while inside the womb in order to survive. So inspite of reproduction of many embryos, a Sandtiger shark gives birth to only two pups at a time through separate chambers after a gestation period of 8-9 months. Pups are roughly 3.3 feet (1 m) long at birth Due to their slow reproduction and rapid hunting, these sharks are considered to be endangered and are protected in many countries. Statistics: Males average 2.4m, females average 2.6m. The largest recorded was 3.2m Sandtiger Shark Classification:
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