Great lanternshark

The great lanternshark is a shark of the family Etmopteridae found in the northeast and northwest Atlantic. Its name was given because, at the time of its discovery, it was thought to be bioluminescent, but this has been challenged.

Description

Great lanternsharks are slender and small, and are generally found in deep water. They can grow up to. They are sexually dimorphic; females are larger than males. They are black or very dark brown, uniformly, in color, and lack an anal fin. They live at depths between and. The dorsal fins have an associated spine.