Poptop

Poptop is an enemy introduced in Star Fox Adventures which carries some attributes similar to a turtle. It's the only enemy that constantly resides in water-filled areas and can only harm Arwingpedia:Fox if he gets located while being in the the water. Once Fox gets located, it swiftly swims towards him and bites him, followed by it making a withdrawal to where it previously swam. It can be killed by a shot from the Fire Blaster when its head gets extended.