Alex Mustard / Three moray eels, a Honeycomb moray: (Gymnothorax favagineus), Yellowmargin moray: (Gymnothorax flavimarginatus) and White-eyed moray (Gymnothorax thrysoideus) emerge from a single hole in a coral ree...

David Fleetham / Yellowmargin moray eel (Gymnothorax flavimarginatus) with a Banded coral shrimp (Stenopus hispidus) inspecting it for parasites, Hawaii.

Franco Banfi / Yellowmargin moray (Gymnothorax flavimarginatus) peering out of hole, Tubbataha Reef Natural Park, UNESCO World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines

Michael Pitts / Yellow-margined moray (Gymothorax flavimarginatus) with accompaning cleaner shrimp. Maldives.

Franco Banfi / Yellowmargin moray (Gymnothorax flavimarginatus) Waigeo island, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Sergio Hanquet / Yellowmargin moray (Gymnothorax flavimarginatus) resting on coral reef, Maldives, Indian Ocean.

Sergio Hanquet / RF - Yellowmargin moray (Gymnothorax flavimarginatus) with mouth open displaying aggression, Maldives, Indian Ocean. (This image may be licensed either as rights managed or royalty free.)

David Fleetham / Two Scarlet cleaner shrimps (Lysmata amboinensis) inspecting a Yellowmargin moray eel (Gymnothorax flavimarginatus) off Sabang Beach, Mindoro, Philippines, Pacific Ocean.

Alex Mustard / Yellowmargin moray (Gymnothorax flavimarginatus) peering out from Digitate leather coral (Sinularia sp.) on a reef, Ari Atoll, Maldives, Indian Ocean.

David Fleetham / Yellowmargin moray eel (Gymnothorax flavimarginatus) sheltering in a crevice behind a Slate pencil sea urchin (Heterocentrotus mammillatus), Hawaii, Pacific Ocean.

David Fleetham / Yellow margin moray eel (Gymnothorax flavimarginatus) with two Blue goatfish (Parupeneus cyclostomus), a Bluefin trevally (Caranx melampygus) and a Peacock grouper (Cephalopholis argus) hunting co-ope...