Porcupuffers are large purple fish with spikes on them and with a pink mouth. They made a debut in Super Mario World, where they jumped out the water to defeat Mario. They don't jump very high in games due to their large size. A single fireball can defeat them.
Porcupuffers are found underwater and floating in water on beaches. They jump to attack the player like other games. They act as Deep Cheeps underwater, so you must try to outsmart them.