[Gastropoda] The creeping molluskan foot is in Heteropoda transformed into one, in Pteropoda into two broad flaps, used in swimming, called wing; and the lips and small footlobes.

Diacavolinia in ventral view
Desmopterus in oral view
Cymbulia in oral view
Pneumodermopsis in ventral view
Clione in ventral view

Alternative form for Foot : pedal fin wing.