Greenland shark

Epic card · No. 9934

The Greenland shark (Somniosus microcephalus), also known as the grey shark or gurry shark, is a large shark of the family Somniosidae ("sleeper sharks"), closely related to the Pacific and southern sleeper sharks. Inhabiting the North Atlantic and Arctic Oceans, they are notable for their exceptional longevity, although they are poorly studied because of the depth and remoteness of their natural habitat. Greenland sharks have the longest lifespan of any known vertebrate, estimated to be between 272 and 510 years. They are among the largest extant shark species, reaching a maximum confirmed length of 6.4 m (21 ft) and weighing more than 1,000 kg (2,200 lb). They reach sexual maturity around 150 years of age and their pups are born alive after an estimated gestation period of 8 to 18 years. The shark is a generalist feeder, consuming a variety of available foods, including carrion. Greenland shark meat is made toxic to mammals by high levels of trimethylamine N-oxide, although a treated...

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