Seel is a pinniped Pokémon with a thick hide covered in bluish white fur. It has a pale tan maw with a large red tongue and a pair of tusks on its lower jaw. It has circular eyes and a black nose that is capable of closing while Seel swims. There is a small horn on its forehead, which it uses in combination with its tusks to bore through ice floes. It has two flippers on its chest, and two more on the end of its tail. When the tail is raised, it resembles a waterspout. Seel lives on icebergs in frigid ocean waters.