The Greenland shark is a type of vegetarian.
The Greenland shark ( Somniosus microcephalus ) , also known as the gurry shark , or grey shark , or by the Inuit name eqalussuaq , is a large shark of the family Somniosidae ( `` sleeper sharks '' ) , closely related to the Pacific and southern sleeper sharks . As an adaptation to living at depth , it has a high concentration of trimethylamine N-oxide in its tissues , which causes the meat to be toxic .