David Fleetham / Commensal shrimp (Pontonides unciger) with tail packed with eggs, Fiji.

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

David Fleetham / Commensal / Periclimenes shrimp (Periclemenes soror), difficult to spot on surface of Large pincushion starfish (Culcita novaeguineae). Hawaii.

David Fleetham / Commensal / Periclimenes Shrimp (Periclimenes lanipes) on branching surface of Basketstar (Astoboa nuda). Komodo, Indonesia.

David Fleetham / Commensal shrimp (Pliopontonia furtiva) camouflaged on Corallimorph (Pseudocorynactis sp), Komodo National Park, Indonesia.

David Fleetham / Giant / Star pufferfish (Arothron stellatus) opening gills to allow the Commensal / Periclimenes shrimp, (Periclimenes sp) to go inside in search of parasites, Bali, Indonesia.

David Fleetham / Reticulated brittle star (Ophiocoma brevipes), and commensal shrimp (Periclemenes soror) on a cushion starfish (Culcita novaeguineae), Hawaii.

Franco Banfi / Two Mushroom coral / Commensal shrimps (Cuapetes / Periclimenes kororensis) on Mushroom coral (Heliofungia actiniformis) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific O...

Franco Banfi / Commensal shrimp (Pliopontonia furtiva) camouflaged on Disc anemone (Amplexidiscus fenestrafer) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.

Franco Banfi / Commensal shrimp (Pliopontonia furtiva) camouflaged on Disc anemone (Amplexidiscus fenestrafer) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.

Franco Banfi / Two Commensal shrimps (Periclimenes tosaensis) in Sea anemone (Heteractis magnifica) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.

Franco Banfi / False clownfish (Amphiprion ocellaris) and a Commensal shrimp (Periclimenes / Ancylomenes tosaensis) in a Sea anemone (Heteractis magnifica) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Ph...