Fishy Bed

The Fishy Bed is a treasure in. It is actually a purple and pink fish-shaped cleaning sponge.

Collecting the treasure
The Fishy Bed is lying on the ground west of the center of the Serene Shores. It is inside an alcove blocked by a dirt wall, which must be destroyed before attempting to collect it. To collect this treasure, you must throw 7 Pikmin at it.