Gary Bell/ Oceanwide / Scarlet Cleaner Shrimp (Lysmata amboinensis) cleaning mouth of Goldbelly Cardinalfish (Apogon apogonides), Tulamben, Bali, Indonesia

Gary Bell/ Oceanwide / Emperor Angelfish (Pomacanthus imperator) juvenile being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Tulamben, Bali, Indonesia

Gary Bell/ Oceanwide / Emperor Angelfish (Pomacanthus imperator) juvenile being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Tulamben, Bali, Indonesia

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.

Gary Bell/ Oceanwide / Blue And Gold Angelfish (Centropyge bicolor), Tulamben, Bali, Indonesia

David Fleetham / Hermit crab (Dardanus pedunculatus) with Sea anemones (Calliactis polypus) for protection. Tulamben, Bali, Indonesia.

David Fleetham / Rock Shrimp (Urocaridella antonbrunii) on a Common Octopus (Octopus cyanea). Tulamben, Bali, Indonesia.

David Fleetham / Yellow Shrimp / Banded Prawn Goby (Cryptocentrus cinctus) lives with this blind snapping shrimp (Alpheus sp.) who is excavating their den. As pictured here, the shrimp always keeps an antennae touchin...

David Fleetham / Commensal Shrimp (Dasycaris) on wire coral. Tulamben area of Bali, Indonesia.

David Fleetham / Ornate ghost pipefish (Solenostomus paradoxus) and shrimp. Tulamben, Bali, Indonesia.

David Fleetham / Titan triggerfish (Balistoides viridescens) getting attention of four Scarlet cleaner shrimp (Lysmata amboinensis) off Tulamben, Bali, Indonesia.

David Fleetham / Diver (MR) exploring the "Liberty" wreck, Tulamben, Bali, Indonesia. August 2008. Model released