Wiglett (Water)

It may look like Diglett, but it’s actually a completely different species of Pokémon. Wiglett pokes a part of its body out of the sand to feed in the ocean. It’s still unclear what the rest of its body hidden in the sand is like or how long it might be. Boasting an exceptional sense of smell, Wiglett is able to pick up scents from over 60 feet away. It has a skittish disposition and is constantly cautious of its surroundings. When it notices the scent of other Pokémon, Wiglett burrows into the sand to conceal itself.

(via Serebii)