Alex Mustard / Ribbon sweetlips (Plectorhinchus polytaenia) USAT Liberty Wreck, Tulamben, Bali, Indonesia. Java Sea

Alex Mustard / Nudibranchs (Doto greenamyeri) newly described species on feather hydroids. Seraya Bay, north coast of Bali, Indonesia. Java Sea.

Alex Mustard / Common ghostgoby (Pleurosicya mossambica) with another fish in its mouth on soft coral (Dendronephthya sp.). Tulamben, Bali, Indonesia. Java Sea

Alex Mustard / Group of predators hunting together, in an example of 'Nuclear foraging'. The Moray eel (Gymnothorax javanicus) flushes out prey, and is followed by a Napolean wrasse (Cheilinus undulatus) and a Bluef...

Alex Mustard / A Pygmy Seahorse (Hippocampus bargibanti) in red seafan (Muricella sp.). Pygmy Seahorses are small, most less than 15mm in total length. Tulamben, Bali, Indonesia, Java Sea, August.

Georgette Douwma / Giant moray eel (Gymnothorax javanicus) Andaman Sea, Thailand

Georgette Douwma / Giant moray eel with Cleaner wrasse {Gymnothorax javanicus} Red Sea

Alex Mustard / Portrait of a Whip coral shrimp (Pontonides ankeri). This species, although widespread and reasonably common, was formally described only in 2007, by Russian zoologist Ivan Marin. Seraya, Bali, Indone...

Alex Mustard / Close up of a tiny Boxer crab (Lybia tessellata) as it waves the stinging anemones it holds in its claws for defence. Tulamben, Bali, Indonesia. Java Sea.

Linda Pitkin / Bluefin trevally (Caranx melampygus) mixed-species foraging and hunting behaviour, with Giant moray (Gymnothorax javanicus). Shark Reef to Jolande, Ras Mohammed National Park, Egypt, Red Sea.

Alex Mustard / Pair of Coleman shrimps (Periclimenes colemani) make their home in a fire urchin (Asthenosoma varium). The female is larger. Fire urchins are one of the largest and most venomous urchins, their bright...

Alex Mustard / Rhinoceros triplefin (Helcogramma rhinoceros) male displaying his dark mating colours and lifts his extended snout to impress a more drably coloured female as she lays eggs in their nest. Seraya, Tula...