Juergen Freund / Coleman shrimp (Periclimenes colemani) on a Fire urchin (Asthenosoma varium) Moluccas Islands, Indonesia.

David Hall / Sea urchin shrimp on venemous urchin {Periclimenes colemani & Asthenosoma} Papua New Guinea

Pascal Kobeh / Coleman's bubble coral shrimp (Vir colemani) with its eggs in a bubble-coral (Plerogyra sinuoasa) where it is protected, New Caledonia, Pacific Ocean Completed Review

Georgette Douwma / Coleman's coral shrimp (Vir colemani) Triton Bay, Indonesia.

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 / Pair of Coleman shrimps (Periclimenes colemani) living in a fire urchin (Asthenosoma varium). The female is the larger shrimp. Fire urchins are one of the largest and most venomous urchins, their brig...

Alex Mustard / Coleman shrimp (Periclimenes colemani) close up, on a fire urchin (Asthenosoma varium). Anilao, Batangas, Luzon, Philippines. Verde Island Passages, Tropical West Pacific Ocean.

Linda Pitkin / Coleman shrimp (Periclimenes colemani) pair on Fire urchin (Asthenosoma ijimai) Rinca, Komodo National Park, Indonesia.

Linda Pitkin / Coleman shrimp (Periclimenes colemani) on Fire urchin (Asthenosoma ijimai). Aljui Bay, Raja Ampat, West Papua, Indonesia.

Norbert Wu / Coleman's Shrimp (Periclimenes colemani) male and female hiding among spines of venomous Fire Urchin (Asthenosoma varium), Ambon, Indonesia

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

Birgitte Wilms / Coleman's Shrimp (Periclimenes colemani) male and female on Fire Urchin (Asthenosoma varium) 90 feet deep, Indonesia

David Hall / Sea urchin shrimp (Periclimines colemani) on sea urchin, Indonesia - commensalism

David Hall / Sea urchin shrimp {Periclimenes colemani} on venemous urchin {Asthenosoma} Papua New Guinea

Hiroya Minakuchi / Coleman's Shrimp (Periclimenes colemani) living among the venomous spines of a sea urchin, Sulu Sea, Borneo, Malaysia

Birgitte Wilms / Coleman's Shrimp (Periclimenes colemani) pair with shed carapace, Papua New Guinea

Fred Bavendam / Fire Urchin (Asthenosoma varium) that is host to a pair of Coleman's Shrimp (Periclimenes colemani) and parasitic Snails (Leutzenia asthenosomae), Bali, Indonesia

Fred Bavendam / Coleman's Shrimp (Periclimenes colemani) pair living among the spines of a Fire Urchin (Asthenosoma varium), Milne Bay, Papua New Guinea

Fred Bavendam / Coleman's Shrimp (Periclimenes colemani) pair living among the spines of a Fire Urchin (Asthenosoma varium), Milne Bay, Papua New Guinea

Fred Bavendam / Coleman's Shrimp (Periclimenes colemani) pair living in venomous spines of a Fire Urchin (Asthenosoma varium), Bali, Indonesia

Constantinos Petrinos / Sea urchin shrimp {Periclimenes colemani} on Sea urchin {Asthenosoma varium} Indonesia Sulawesi

Juergen Freund / Commensal Sea urchin shrimp {Periclimes colmani} amongst spines of poisonous sea urchin. Indo-Pacific

Gary Bell/ Oceanwide / Coleman's Shrimp (Periclimenes colemani) male and female on Fire Urchin (Asthenosoma varium), Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Coleman's Shrimp (Periclimenes colemani) male and female on Fire Urchin (Asthenosoma varium), Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Coleman's Shrimp (Periclimenes colemani) female on Fire Urchin (Asthenosoma varium), Great Barrier Reef, Australia

David Fleetham / Pair of Sea urchin / Coleman shrimp (Periclimenes colemani), clearing a section of fire urchin (Asthenosoma varium) of tube feet and spines where they live unharmed, Mabul Island, Malaysia.

Norbert Wu / Coleman's Shrimp (Periclimenes colemani) male and female hiding among spines of venomous Fire Urchin (Asthenosoma varium), Ambon, Indonesia

Norbert Wu / Coleman's Shrimp (Periclimenes colemani) male and female hiding among spines of venomous Fire Urchin (Asthenosoma varium), Ambon, Indonesia

Norbert Wu / Coleman's Shrimp (Periclimenes colemani) male and female hiding among spines of venomous Fire Urchin (Asthenosoma varium), Ambon, Indonesia

Norbert Wu / Coleman's Shrimp (Periclimenes colemani) hiding among venomous spines of Fire Urchin (Asthenosoma varium), Komodo, Indonesia

Norbert Wu / Coleman's Shrimp (Periclimenes colemani) hiding among venomous spines of Fire Urchin (Asthenosoma varium), Komodo, Indonesia

GEORGETTE DOUWMA / Sea urchin / Coleman's shrimp {Periclimenes colemani} male and female in Fire sea urchin, Indo Pacific

Carine Schrurs / Sea urchin (Coleman) shrimp pair in Fire urchin host. Anilao Batangas Philippines

Constantinos Petrinos / Commensal Coleman shrimp {Periclimenes colemani} on Toxic sea urchin. Philippines

Alex Mustard / Coleman shrimps (Periclimenes colemani) pair, female on right, camouflaged in their Fire urchin (Asthenosoma varium) home, Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Pa...

Alex Mustard / Coleman shrimp (Periclimenes colemani) female, with smaller male on left, living in a Fire urchin (Asthenosoma varium), Bitung, North Sulawesi, Indonesia, Lembeh Strait.

Alex Mustard / Coleman shrimp (Periclimenes colemani) female, with smaller male on left, living in a Fire urchin (Asthenosoma varium), Bitung, North Sulawesi, Indonesia, Lembeh Strait, Molucca Sea.

Henley Spiers / Coleman shrimp (Periclimenes colemani ) pair, resting within their Fire urchin (Astropyga radiata) host, Anilao, Mabini, Philippines, Pacific Ocean.

Alex Mustard / Pair of Coleman shrimps (Periclimenes colemani) living in Fire urchin (Asthenosoma varium). The female is the larger shrimp. Anilao, Batangas marine protected area, Luzon, Philippines. Verde Island Pa...