The
sea mink (
Neovison macrodon) is an extinct North American member of the family
Mustelidae. It is the only mustelid, and one of only two terrestrial mammal species in the order
Carnivora, to become extinct in historic times (the other being the
Falkland Islands wolf). The body of the sea mink was significantly longer than that of the closely related
American mink (
N. vison), and also bulkier, leading to a pelt that was almost twice the size of the other species. The longest specimen recorded was said to be . The sea mink produced a distinctive odor, and had fur that was said to be coarser and redder than the American mink's.