Jurgen Freund / Carrier / Sea urchin crab (Dorippe frascone) carrying a fire urchin as a deterrent to predators. Lembeh Strait, North Sulawesi, Indonesia

Jurgen Freund / Decorator spider crab {Camposcia refusa}. Indo-Pacific

Constantinos Petrinos / Decorator crab {Miccipa philyra}. Sulawesi, Indonesia.

Claudio Contreras / Speck-claw decorator crab (Microphrys bicornuta) camouflaged, Cienaga de Zapata National Park, Matanzas Province, Cuba.

David Hall / Decorator crab (Majidae) covered with hydroid polyps, providing camouflage and defensive sting. On Soft coral (Alcyonacea). Pantar, Alor Archipelago, Indonesia; November, 2006

Pascal Kobeh / Corallimorph decorator crab (Cyclocoeloma tuberculata), Sulu sea, Philippines

David Fleetham / Decorator crab (Cyclocoeloma tuberculata) covered with Hydroids (Hydrozoa) to ward off predators. Off Rinca Island and Komodo Island, Indonesia.

Constantinos Petrinos / Decorator crab (unidentified) on Soft Coral at night. Due to the heavy decoration, the diagnostic features of many species are hidden from view and only a laboratory examination of a specimen can prov...

Constantinos Petrinos / Decorator crab (unidentified) on Soft Coral at night. Due to the heavy decoration, the diagnostic features of many species are hidden from view and only a laboratory examination of a specimen can prov...

Constantinos Petrinos / Decorator crab (unidentified) on Soft Coral at night. Due to the heavy decoration, the diagnostic features of many species are hidden from view and only a laboratory examination of a specimen can prov...

Constantinos Petrinos / Corallimorph decorator crab (Cyclocoeloma tuberculata) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Corallimorph decorator crab (Cyclocoeloma tuberculata) fixing Corallimorpharian (Discosomatidae) to shell using setae, Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Corallimorph decorator crab (Cyclocoeloma tuberculata) fixing Corallimorpharian (Discosomatidae) to shell using setae, Lembeh Strait, North Sulawesi, Indonesia.

Pascal Kobeh / Longhorn decorator crab (Chorilia longipes), Alaska, USA, Gulf of Alaska. Pacific ocean.

Pascal Kobeh / Slender / Graceful decorated crab (Oregonia gracilis), Alaska, USA, Gulf of Alaska. Pacific ocean.

Jurgen Freund / Decorator crab (Dorippe frascone) with an Upside down jellyfish (Cassiopea andromeda) on its back. The jellyfish is bigger than the crab! Palawan, Philippines.

Jurgen Freund / Soft coral decorator crab (Hoplophrys oatesii) camouflaged on soft coral (Dendronephthya sp) Kimbe Bay, West New Britain, Papua New Guinea.

Jurgen Freund / Carrier crab (Dorippe frascone) with an upside down jellyfish (Cassiopea andromeda) on its back. The jellyfish is bigger than the crab! Palawan, Philippines.

Georgette Douwma / Hydroid or Fairy crab (Hyastenus bispinosus) perched on soft coral. It has decorated its body with hydroid polyps. Majidae - Spider or Decorator crab. Rinca, Komodo National Park, Indonesia.

Georgette Douwma / Hydroid or Fairy Crab (Hyastenus bispinosus) on crinoid or featherstar. Hydroid polyps are growing on its carapace. Rinca, Indonesia, October.

Jurgen Freund / Sponge decorator crab (Hyastenus elatus) almost invisible under the sponges attached to its shell. Lembeh Strait, North Sulawesi, Indonesia.

Jurgen Freund / Carrier / Sea urchin crab (Dorippe frascone) carrying a fire urchin as a deterrent to predators. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Hydroid or Fairy crab (Hyastenus bispinosus) on Sea squirt where it has climbed to feed. It has decorated its body with hydroid polyps. Majidae - Spider or Decorator crab. Rinca, Indonesia

Georgette Douwma / Hydroid or Fairy crab (Hyastenus bispinosus) on Sea pen (Pteroides sp.) where it has climbed to feed on plankton floating past. It has decorated its body with hydroid polyps. Majidae - Spider or Decor...

Georgette Douwma / Carrier / Dorippid crab (Dorippe frascone) on sea bed holding Sea urchin (Astropyga radiata) on its shell, Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Carrier / Dorippid crab (Dorippe frascone) on sea bed holding Sea urchin (Astropyga radiata) on its shell, Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Hydroid / Fairy crab (Hyastenus bispinosus) on Sea squirt where it has climbed to feed, it has decorated its body with hydroid polyps, Rinca, Indonesia

Georgette Douwma / Hydroid / Fairy crab (Hyastenus bispinosus) on Sea pen (Pteroides sp) where it has climbed to feed on plankton floating past, it has decorated its body with hydroid polyps, Rinca, Indonesia

Brandon Cole / Moss crab (Loxorhynchus crispatus), a decorator crab with a few sponges and bryozoans on carapace. California, USA, Pacific Ocean. NOT FOR SALE IN THE USA.

Brandon Cole / Graceful decorator crab (Oregonia gracilis) covered in sponges for camouflage, Pacific Northwest, Pacific Ocean. NOT FOR SALE IN THE USA

Georgette Douwma / Hydroid or Fairy crab (Hyastenus bispinosus) that has decorated its body with hydroid polyps, Rinca, Indonesia

Georgette Douwma / Hydroid / Fairy crab (Hyastenus bipinosus) on Sea pen (Pteroides sp.) where it has climbed to feed on plankton floating past. It has decorated its body with hydroid polyps, Indonesia

Doug Perrine / Soft coral spider / Decorator crab {Hoplophrys oatesii} on soft coral {Dendronephthya sp} crab covered in live coral polyps for camouflage. Bali, Indonesia

Jeff Rotman / Decorator / Spider Crab (Achaeus spinosus) feeding on Alcyonarian Coral (Dendronephthya sp.) at night. Egypt, Red Sea.

Jurgen Freund / Decorator crab camouflaged with tunicates and soft corals, Indo-Pacific

Brandon Cole / Decorator crab carrying Upside-down jellyfish on its back for protection. Indonesia,

Constantinos Petrinos / Decorator crab {Micippa philyra} Sulawesi, Indonesia

Michael Pitts / Decorator / Spider crab {Camposcia refusa} on wreck Truk lagoon, Micronesia,

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

Visuals Unlimited / Urchin crab (Dorippe frascone) carrying a Radiant sea urchin (Astropyga radiata) on its back for protection, Sulawesi, Indonesia

Visuals Unlimited / Decorator Crab (Camposcia retusa) covers itself with trash as a disguise, Lembeh Straits, Indonesia.

Visuals Unlimited / Black-eyed hermit crab (Pagurus amatus) in a shell with abundant Acorn barnacles (Balanus sp) and other small marine invertebrates growing on it. The Barnacles are feeding and their presence provides...

Visuals Unlimited / Sponge-back crab (Dromidiopsis dormia) with camouflaging Sponges on its carapace, Hawaii, USA.

Visuals Unlimited / Masking Crab (Scyra acutifrons) with numerous Sea Anemones and other marine organisms on its back / carapace that camouflage it, Pacific Coast of North America.

Visuals Unlimited / Longhorn Decorator Crab (Chorilia longipes), a deep-water species, California, USA, Pacific Ocean.