Sea otter sea ocean 21. The sea mink neovison macrodon is a recently extinct species of mink that lived on the eastern coast of north america in the family mustelidae the largest family in the order carnivorait was most closely related to the american mink neovison vison with debate about whether or not the sea mink should be considered a subspecies of the american mink making it neovison vison macrodon or a. The steller sea lion eumetopias jubatus also known as the northern sea lion and stellers sea lion is a near threatened species of sea lion in the northern pacificit is the sole member of the genus eumetopias and the largest of the eared seals otariidae and is also the largest species of sea lion.