O. scyllarus is a smasher, with club-shaped raptorial appendages. An agile and active intertidal and sub-intertidal predator, it prefers gastropods, crustaceans, and bivalves, and will repeatedly deliver blunt force to the exoskeleton of its prey until it can gain access to the underlying soft tissue for consumption.
O. scyllarus is a predator with powerful clubbed appendages used for crushing its prey. It's an active hunter found in intertidal and sub-intertidal zones, feeding on gastropods, crustaceans, and bivalves.  It uses forceful strikes to break the exoskeletons of its prey before consuming the soft tissue underneath.