mediterranean monk seals are diurnal and feed on a variety of fish and mollusks, primarily octopus, squid, and eels, up to per day. they are known to forage mostly at depths of , but some have been observed by noaa submersibles at a depth of . they prefer hunting in wide-open spaces, enabling them to use their speed more effectively. they are successful bottom-feeding hunters; some have even been observed lifting slabs of rock in search of prey. they have no natural predators.