Proto Piranha

A Polluted Piranha Plant is a large species of Piranha Plant composed entirely of Goop. They appear as enemies in Super Mario Sunshine, Mario Power Tennis, and Mario Golf: Advance Tour. Unlike regular Piranha Plants, Polluted Piranha Plants do not have any teeth.

In Super Mario Sunshine, Polluted Piranha Plants appear out of Goop Generators in several areas towards the beginning of the game. In order to defeat one, Mario must use F.L.U.D.D. to shoot water into its open mouth repeatedly (if Mario sprays one while its mouth is closed, it merely shrugs the attack off). Once defeated, Polluted Piranha Plants dissolve into Goop, after which their Goop Generator disappears; Mario cannot wash away a Goop Generator like he can with normal Goop without first defeating the Polluted Piranha Plant inside. Aside from periodically spawning Swoopin' Stus, a Polluted Piranha Plant does nothing to attack, and will actually retreat back into its Goop Generator if Mario does not spray it.

Polluted Piranha Plants come in several different colors which correspond to the specific type of Goop of which they are comprised. The behavior of these enemies varies depending on the color of the Goop that they come out of; Polluted Piranha Plants that emerge from pink, yellow, orange, and white Goop cannot spawn Swoopin' Stus and must be sprayed three times before being defeated, those that come out of brown and white Goop can spawn Swoopin' Stus and must be sprayed three times before being defeated, and those that come out of black Goop are able to spawn Swoopin' Stus and have to be sprayed six times before being defeated.

In Mario Power Tennis, Petey Piranha's Defensive Power Shot, Piranha Swingback, involves him creating a Polluted Piranha Plant to hit an unreachable tennis ball for him.

In Mario Golf: Advance Tour, Polluted Piranha Plants appear in the Mushroom Tourney course along with many regular Piranha Plants. They are found outside of the course itself.