Are there any marine animals in the Arctic Tundra?

Th Arctic tundra refers to cold, flat lands that always have a layer of frozen soil a few inches below the surface, called permafrost. Because marine animals by definition live in the ocean and not on land, there aren't marine animals in the tundra. However, many marine animals such as fish, killer whales, sea lions, and more live in the Arctic, and a few, such as sea lions, may rest on the shoreline of the tundra.