Juergen Freund / Pink / hairy squat lobster (Lauriea siagiani) camouflaged on pink sponge, Bali, Indonesia.

Juergen Freund / Imperial / Emperor shrimps (Periclimenes imperator / Zenopontonia rex) on a sea cucumber. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Hermit crab with shell covered in soft coral (Heteroxenia fuscescens) Lembeh Strait, North Sulawesi, Indonesia

Konrad Wothe / Violin Beetle (Mormolyce phylloides / borneensis) on bark. Danum Valley, Borneo, Indonesia.

Juergen Freund / A factory of women taking the meat out of cooked Blue swimmer crabs (Portunus pelagicus) to pack for export to America. Northern Palawan, Phillipines, May 2009

Juergen Freund / Deepsea spider crab caught at 150 meters, Indo-pacific

Juergen Freund / Harlequin shrimps (Hymenocera elegans) on a Linkia blue starfish, North Sulawesi, Indonesia.

Juergen Freund / Spearing mantis shrimp (Lysiosquilloides sp) in burrow, Komodo NP, Indonesia.

Juergen Freund / Emperor Shrimp (Periclimenes imperator / Zenopontonia rex) on a chromodoris nudibranch, Bali, Indonesia, Indo-pacific.

Juergen Freund / Coral shrimp (Tozeuma sp.) well camouflaged among purple fronds. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Blue swimmer crab (Portunus pelagicus) on the sea bed. Lembeh Strait, North Sulawesi, Indonesia

Juergen Freund / Imperial / Emperor shrimps (Periclimenes imperator / Zenopontonia rex) on a sea cucumber. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Swimmer crab / Harlequin crab (Lissocarcinus laevis) and Tube anemone. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Imperial / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on a sea cucumber. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Box crab (Calappa sp.) on the sand. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Coral shrimp (Tozeuma sp.) well camouflaged among purple fronds. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Orangutan crab (Achaeus japonicus) on bubble coral. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Hermit crab walking over seabed leaving tracks in the sand, Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / Porcelain anemone crab (Neopetrolisthes maculosus / maculatus). Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Coral reef with two tiny reef crabs. North Raja Ampat, West Papua, Indonesia

Juergen Freund / Tiny reef crab on a coral. North Raja Ampat, West Papua, Indonesia

Juergen Freund / Coral shrimp (Tozeuma sp.) against coral. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Anemone hermit cab (Dardanus pedunculatus) with several anemones on its shell. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Hermit crab (Dardanus megistos) on sandy bottom. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Giant mantis shrimp (Lysiosquilla sp) out of its burrow. Lembeh Strait, North Sulawesi, Indonesia.

Tim Laman / Spider crab (Achaeus sp.) with hydroid polyps placed on its legs for camouflage, at night. Raja Ampat Islands, Indonesia., April 2007

Tim Laman / Praying mantis (Mantodea) green leaf mimicing type, camouflaged on leaf, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Tim Laman / Praying mantis (Mantodea) dead leaf mimic type, performing a threat display at the photographer by showing its boldly patterned underwing. Gunung Palung National Park, Borneo, West Kalimantan, Indones...

Tim Laman / Praying mantis (Mantodea) camouflaged as fallen dead leaf amongst leaf litter. Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Tim Laman / Praying mantis (Mantodea) nymph of a green and white banded species, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Tim Laman / Praying mantis (Mantodea) resembling tree bark, resting on leaves, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Tim Laman / Boxer crab (Lybia tesselata) holding small sea anemones in its claws (a mechanism for defense in this species). Bali, Indonesia

Tim Laman / Harlequin shrimp (Hymenocera elegans) feeding on arm severed from a Blue starfish / Sea star (Linckia laevigata) , Malapascua Island, Visayan Sea, Philippines

Tim Laman / Fiddler crab (Uca sp.) male on the mudflats of the Matang mangroves. Taiping vicinity, Perak, Malaysia. May 2006

Juergen Freund / Blue land crab {Cardisoma carnifex} on rocks on shore, Camarines Sur, Luzon, Philippines

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

David Hall / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on Spanish dancer (Hexabranchus sanguineous) Indonesia

David Hall / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on Spanish dancer (Hexabranchus sanguineous) Indonesia

Juergen Freund / Thousands of Christmas Island Red crabs on rocky shore (Gecarcoidea natalis)

Roberto Rinaldi / Reef crab / seven-eleven / dark finger coral crab (Carpilius macultatus), Sipadan, Borneo, Malaysia.

Roberto Rinaldi / Two harlequin shrimp (Hymenocera elegans), Mergui archipelago, Myanmar.

Roberto Rinaldi / Commensal shrimp / Anemone shrimp (Pliopontonia sp) on a bubble coral (Plerogyra sp), Lankayan Island, Borneo

Roberto Rinaldi / Porcelain anemone crab (Neopetrolisthes maculatus) in anemone, Kudat, Sabah, Borneo, Malaysia. Not a true crab but a squatlobster.

Juergen Freund / Cleaner shrimp {Periclimenes sp} transparent on coral, Philippines, Indo pacific

Juergen Freund / Cleaner shrimp {Periclimenes sp} completely transparent on coral, Philippines, Indo pacific

Juergen Freund / Cleaner shrimp {Periclimenes sp} on coral, Philippines, Indo pacific

Juergen Freund / Decorator crab catching plankton {Majiidae sp.} South Pacific, Philippines