Predators are sharks. Nocturnal and shy creatures, green morays often hide in crevices and coral. Their dorsal, caudal and tail fins are joined as one long fin down their back and up their belly. They often anchor their tails between rocks while they hide during the day. They have no scales, just a leathery skin.
Eels are secretive and employ stealth as a primary hunting technique.
Morays have large mouths with many teeth. Their mouths are often agape, showing off their teeth, however morays are not as aggressive as they may appear. Myths persist that morays are poisonous, however this is not the case. Bacteria in their mouths can cause serious infections, but they are not apt to bite unless provoked. Although morays are eaten by humans in some areas, their flesh often causes ciguatera poisoning, which is debilitating and occasionally fatal.