Birgitte Wilms / Coleman's Shrimp (Periclimenes colemani) camouflaged on Fire Urchin (Asthenosoma varium), Indonesia

Birgitte Wilms / Shrimp (Periclimenes sp) in anemone tentacles, Papua New Guinea

Juergen Freund / Mushroom coral ghost shrimps / Anemone shrimps (Periclimenes kororensis), always found in association with mushroom corals (Heliofungia sp.) or sea anemones. Lembeh Strait, North Sulawesi, Indonesia

Luciano Candisani / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on Giant Caribbean Anemone (Condylactis gigantea), Santa Barbara Island, Abrolhos Islands, Bahia, Brazil

Luciano Candisani / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on Giant Caribbean Anemone (Condylactis gigantea), Santa Barbara Island, Abrolhos Islands, Bahia, Brazil

Luciano Candisani / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on Giant Caribbean Anemone (Condylactis gigantea), Santa Barbara Island, Abrolhos Islands, Bahia, Brazil

Fred Bavendam / Appoloosa Shrimp (Periclimenes holthuisi) female carrying eggs on abdomen, Lembeh Strait, Indonesia

Chris Newbert / Coleman's Shrimp (Periclimenes colemani) on Fire Urchin (Asthenosoma varium), Indonesia

Chris Newbert / Coleman's Shrimp (Periclimenes colemani) and Adam's Urchin Crab (Zebrida adamsii) on Fire Urchin (Asthenosoma varium), Indonesia

Michele Westmorland / Small shrimp (Periclimenes sp) on anemone tentacles, House Reef at the Jetty, Tufi, Oro Province, Papua New Guinea

Chris Newbert / Emperor Shrimp (Periclimenes imperator / Zenopontonia rex) on Sea Cucumber (Euapta sp), Papua New Guinea

Scott Leslie / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on anemone, Bonaire, Caribbean