The Greenland shark lives in the deepest part of the Arctic Ocean.
They have adapted to their deep environment by having 3 kinds of hemoglobin and a high concentration of trimethylamine N-oxide in its tissues to increase buoyancy. This causes the meat to be toxic to all mammals.
The Greenland shark has the longest known lifespan of all vertebrate species. They live up to 500 years.
They have 7 gills therefore the gill openings are very small for the species’ great size.
The Greenland shark is likely one of the largest living species of shark. It usually grows to between 2.4 and 7 m but a male Greenland shark is usually smaller than female shark.
The Greenland shark is an apex predator and eats fish, although they have been observed hunting seals in Canada.
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