A peacock mantis shrimp smashing a snail Video of A peacock mantis shrimp smashing a snail This peacock mantis shrimp (Odontodactylus scyllarus) uses its hammer-shaped appendages to smash open hard-shelled prey. This is a "regular speed" video showing an individual successfully opening a snail shell. Three button category: Mechanics of MovementMantis Shrimp