Giant Moray Eel (Gymnothorax javanicus) - Marine Life - Liveaboard Diving

Giant Moray Eel

The Giant Moray Eel is the largest & most common of the Moray Eels in the Indo-Pacific region. Although they look scary, they are just forcing water through their gills while resting in the reef. They generally feed on crustaceans at night.

Giant Moray Eel Gymnothorax javanicus
Scientific Rank
Kingdom:Animalia
Phylum:Chordata (Chordates)
Class:Actinopterygii
Order:Anguilliformes (Eels)
Family:Muraenidae (Muraenidae)
Genus:Gymnothorax (Gymnothorax)
Species:Gymnothorax javanicus
Size
Average Size:2 metres

The giant moray eel (Gymnothorax javanicus) is one of the largest and most recognisable moray eels found on tropical coral reefs throughout the Indo-Pacific. Growing to over 3 metres in length, these powerful predators are often seen with their mouths open, a behaviour used for breathing rather than aggression. They feed mainly on fish, octopus and crustaceans, often hunting at night or alongside groupers. Although their appearance can be intimidating, giant moray eels are generally shy and will usually retreat if left undisturbed, making them a favourite sight for underwater photographers and divers.

No Troubles Just Bubbles divers who recently spotted Giant Moray Eel

(113) - No Troubles Just Bubbles divers have spotted Giant Moray Eel on a liveaboard trip - showing the 8 most recent

Alex
Spotted in: Maldives Maldives
Liveaboard: Blue Force One
Destinations: North Male Atoll, South Male Atoll, Vaavu Atoll, North Ari Atoll, South Ari Atoll, Faafu Atoll
When: Apr 2026
Kian
Spotted in: Thailand Thailand
Liveaboard: MV Koon9
Destinations: Similan Islands, Koh Bon, Koh Tachai
When: Apr 2026
Jonathan
Spotted in: Thailand Thailand
Liveaboard: MV Koon9
Destinations: Similan Islands, Koh Bon, Koh Tachai, Richelieu Rock
When: Apr 2026
Ventan
Spotted in: Thailand Thailand
Liveaboard: Similan Quest
Destinations: Koh Bon, Similan Islands
When: Mar 2026
Zoe
Spotted in: Thailand Thailand
Liveaboard: MV Koon9
Destinations: Similan Islands, Koh Bon, Koh Tachai, Richelieu Rock
When: Mar 2026
Jannike
Spotted in: Thailand Thailand
Liveaboard: MV Manta Queen 7
Destinations: Similan Islands, Koh Bon, Koh Tachai, Richelieu Rock, Boonsung Wreck
When: Mar 2026
Toni
Spotted in: Maldives Maldives
Destinations: Huvadhoo Atoll, Fuvahmulah, Addu Atoll
When: Feb 2026
Peter Miles
Spotted in: Thailand Thailand
Liveaboard: MV Bavaria
Destinations: Similan Islands, Koh Bon, Koh Tachai, Richelieu Rock, Surin Islands
When: Feb 2026

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