Alpha-sapphire: When fishing for food at the edge of a fast-running stream, Marill wraps its tail around the trunk of a tree. This Pokémon’s tail is flexible and configured to stretch.Omega-ruby: Marill’s oil-filled tail acts much like a life preserver. If you see just its tail bobbing on the water’s surface, it’s a sure indication that this Pokémon is diving beneath the water to feed on aquatic plants.Y: The tip of its tail is filled with oil that is lighter than water, so it acts as a float.