![]() Great whites often swallow their own broken off teeth along with chunks of their prey's flesh. A great white's teeth are serrated and when the shark bites it will shake its head side to side and the teeth will act as a saw and tear off large chunks of flesh. This arrangement seems to give their teeth high tactile sensitivity. The teeth are linked to pressure and tension-sensing nerve cells. Their teeth also rotate on their own axis (outward when the jaw is opened, inward when closed). Their teeth are unattached to the jaw and are retractable, like a cat's claws, moving into place when the jaw is opened. Great whites, like many other sharks, have rows of teeth behind the main ones, allowing any that break off to be rapidly replaced. It is pale to dark grey and has a white stomach. It has almost the same size upper and lower lobes on the tail fin (like most mackerel sharks, but unlike most other sharks). The great white shark has a robust large conical-shaped snout. In a similar study a white shark from South Africa was tracked swimming to the northwestern coast of Australia and back to the same location in South Africa, a journey of 20,000 kilometres in under 9 months. It is still unknown why they migrate and what they do there it might be seasonal feeding or possibly a mating area. After they arrive, they change behaviour and do short dives to about 300 m (1,000 ft) for up to 10 minutes. On the journey out, they swim slowly and dive to up to 900 metres (3,000 ft). In a recent study white sharks from California were shown to migrate to an area between Baja California and Hawaii, where they spend at least 100 days of the year before they migrate back to Baja. It is considered an open-ocean dweller and is recorded from the surface down to depths of 1,280 metres (4,200 ft), but is most often found close to the surface. ![]() It is a pelagic fish, but recorded or observed mostly in coastal waters in the presence of rich game like fur seals, sealions, cetaceans, other sharks and large bony fish species. It can be also found in tropical waters like those of the Caribbean and has been recorded off Mauritius. ![]() The densest known population is found around Dyer Island, South Africa where up to 31 different white sharks have been documented by Michael Scholl of the White Shark Trust in a single day. Great white sharks live in almost all coastal and offshore waters which have a water temperature of between 12 and 24° C (54° to 75° F), with greater concentrations off the southern coasts of Australia, off South Africa, California, Mexico's Isla Guadalupe and to a degree in the Central Mediterranean and Adriatic Seas. It is the only known surviving species of its genus, Carcharodon. Reaching lengths of about 6 metres (20 ft) and weighing almost 2,000 kilograms (4,400 lb), the great white shark is the world's largest known predatory fish. The great white shark ( Carcharodon carcharias), also known as white pointer, white shark, or white death, is an exceptionally large lamniform shark found in coastal surface waters in all major oceans. ![]()
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