The Greenland Shark

The Greenland shark lives in the North Atlantic and Arctic Oceans, preferring deep water between 100 and 1,200 metres.

Adults grow to around 4 to 5 metres long. The largest confirmed specimen measured 6.4 metres.

Their genome contains roughly 5.9 billion base pairs.

A crustacean attaches to their eyes, leaving many sharks almost completely blind.

They rely on smell and hearing, swimming at an average speed of 0.34 metres per second.

They eat herring, cod, seals, and carrion. A reindeer is a lot of herring.

They wait a century and a half to breed.

Their meat is toxic to mammals due to trimethylamine N-oxide. Fermentation makes poison a cultural experience.