Tidalrabbit

The Tidalrabbit is a large, rabbit-like creature that lives close to or in water.

=In fanon games=

In Pikmin: The Return of the Puffmin
The Tidalrabbit appears in Pikmin: The Return of the Puffmin as the boss of the Underwater Cave. It hops about its arena, crushing any Pikmin and leaders it lands on. It is vulnerable at all times, but can only be reached while it is on the ground.