Pokémon (1997)

S06E23 Gone Corphishin'

Dewford Town's beach is under siege by a mysterious Pokémon, causing chaos among the locals. Ash and his friends devise a series of traps to uncover the identity of the mischief-maker and soon find out it's a lively Corphish. Can Ash and his crew manage to catch this spirited Water-type, or will they end up outsmarted and left high and dry?