Of the over 500 known shark species, many of these giant fish are hunters and not scavengers–particularly those found in the open ocean. White sharks (Carcharodon carcharias) ambush their prey from below and even sharks closer to shore like reef sharks are known to chase their prey into smaller crevices before eating them. Yet a small portion of the diets of most sharks still comes from picking apart already dead animals. Sometimes, these usually solitary hunters will even scavenge in groups.