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Polisian prefers to be covered in a layer of wet mud to keep itself nice, cool, and moist; this is done out of preference, rather than necessity. In addition, it also likes to dig in the mud to find buried and abandoned glittering objects.

A Polisian's six bold whiskers sense air movements to determine what is in its vicinity. It is possible to see this Pokémon's spiral innards right through its thin skin.