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

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.

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

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

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...