Starry moray eel (Echidna nebulosa), grows to 50cm, Philippines, Southeast Asia, Asia

A close-up of the mouth of a whitemouth moray eel (Gymnothorax meleagris), showing its needle sharp teeth, United States of America, North America

Spotted moray eel (Gymnothorax moringa) in a colourful healthy reef, Dominica, West Indies, Caribbean, Central America

Giant moray (Gymnothorax javanicus), close-up of head, Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Egypt, Red Sea, Egypt, North Africa, Africa

White-spotted Moray, Gymnothorax meleagris, Christmas Island, Australia

Spotted moray eel (Gymnothorax moringa), Dominica, West Indies, Caribbean, Central America

Close-up of the head of a giant moray (Gymnothorax javanicus), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Spotted moray eel (Gymnothorax moringa) swimming, Dominica, West Indies, Caribbean, Central America

Fine spotted Moray, Gymnothorax dovii, Baltra Island, Galapagos, Ecuador

White-spotted Moray, Gymnothorax meleagris, Christmas Island, Australia

Close-up of the head of a giant moray (Gymnothorax javanicus), Ras Mohammed National Park, off Sharm el-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Spotted moray eel in reef, Turks and Caicos Islands, West Indies, Caribbean, Central America

Spotted moray (Gymnothorax isingteena), SouthernThailand, Andaman Sea, Indian Ocean, Southeast Asia, Asia

Spotted moray eel (Gymnothorax moringa), St. Lucia, West Indies, Caribbean, Central America

A snowflake moray eel (Echidna nebulosa) peeks out from a dark hole on a reef in Komodo National Park, Indonesia.

A cleaner shrimp searches for parasites on the head of this spotted moray eel, Tulamben, Bali, Indonesia.

Spotted moray eel (Gymnothorax moringa) feeds in the open during the night, Tobago, West Indies, Caribbean, Central America

Spotted Moray Eel. (Gymnothorax sp) Tobago.

Spotted Moray Eel (Siderea grisea), showing convolutions of eel on indistinct background Seychelles, Indian Ocean.

Moray Eel (Muraena argus). Mexico, Sea of Cortez

Brown spotted moray eel (Gymnothorax sp). Netherland Antilles

Geometric Moray (Gymnothorax griseus), also spotted moray eel, three, patch reef with soft corals (Xenia) and various stony corals, sandy bottom, seagrass bed, Red Sea, Aqaba, Kingdom of Jordan

A close-up underwater view of a Whitemouth Moray eel (Gymnothorax meleagris), Wailea, Wailea, Maui, Hawaii, United States of America

The Giant Moray Eel (Gymnothorax javanicus) can be found around the world in tropical waters, but is very rare in Hawaii, Hawaii, United States of America

Black spotted moray, Gymnothorax melanospilos, Maldives Island, Indian Ocean, Ari Atol

Fine-spotted moray, Gymnothorax dovii, Ecuador, South America, Gal?pagos, Galapagos, Island, Pacific Ocean