Alex Mustard / Giant mottled eel (Anguilla marmorata) in river with villagers washing clothes in background. Ambon, Maluku Archipelago, Indonesia. Banda Sea, tropical west Pacific Ocean.

Juergen Freund / Giant mottled fresh water eels (Anguilla marmorata) in shallows, split level view, Lissenung Island, Kavieng, New Guinea. Second Place in the Portfolio Award of the Terre Sauvage Nature Images Awards...

Shibai Xiao / Marbled eel (Anguilla marmorata) captured by local people and being held up in net, Hainan Island, China. No release available.

Alex Mustard / Giant moray (Gymnothorax javanicus), Honeycomb moray (Gymnothorax favagineus) and Undulated moray (Gymnothorax undulatus) eels, four emerging from hole in coral reef. North Male Atoll, Maldives. India...

Juergen Freund / Giant mottled fresh water eels (Anguilla marmorata) in the shallows, split level, New Ireland, Papua New Guinea.

Juergen Freund / Giant mottled fresh water eels (Anguilla marmorata) in the shallows, split level, New Ireland, Papua New Guinea.

Alex Hyde / Giant mottled eel {Anguilla marmorata} in rainforest stream at night. Masoala Peninsula National Park, north east Madagascar.

Alex Hyde / Giant mottled eel {Anguilla marmorata} in rainforest stream at night. Masoala Peninsula National Park, north east Madagascar.

Nature Production / Giant Mottled Eel {Anguilla marmorata} swimming, Japan

Nature Production / Giant Mottled Eel {Anguilla marmorata} Japan

Etienne Littlefair / Longfin eel (Anguilla reinhardtii) at rest, Mary River, Queensland, Australia, July.

Juergen Freund / Speckled longfin eel (Anguilla reinhardtii) and Saw-shelled turtle (Myuchelys latisternum) group. Lake Barrine, Crater Lakes National Park, Wet Tropics of Queensland, Australia.