David Hall / Haig's porcelain crab (Porcellanella haigae) living commensally on Sea pen (Pennatulacea) Crab recently emerged from exoskeleton. Pantar, Alor Archipelago, Indonesia.

David Fleetham / Porcelain crab (Neopetrolisthes maculata) on anemone, Yap, Micronesia.

Constantinos Petrinos / Spotted porcelain crab (Neopetrolisthes maculatus) pair. Lembeh Strait, North Sulawesi, Indonesia.

Pascal Kobeh / Three-lobed / Painted porcelain crab (Porcellanella triloba) in a Sea pen (Pteroeides or Pennatula sp) Sulu Sea, Philippines

Sue Daly / Broad-clawed Porcelain Crab (Porcellana platycheles) washed up on beach, Sark, British Channel Islands.

Sue Daly / Long clawed porcelain crab (Pisidia longicornis) on seashore, Sark, British Channel Islands.

Sue Daly / Broad-clawed Porcelain Crab (Porcellana platycheles) on sea shore, Sark, British Channel Islands.

Franco Banfi / Porcelain crab (Porcellanella triloba) on a sea pen, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Birgitte Wilms / Spotted Anemone Crab (Neopetrolisthes maculatus) feeding feeding on plankton with feather net arms, Solomon Islands

Hiroya Minakuchi / Spotted Anemone Crab (Neopetrolisthes maculatus) and Anemonefish (Amphiprion sp) in sea anemone host tentacles, Celebes Sea

Chris Newbert / Porcelain Crab (Porcellanella sp) camouflaged on Sea Pen (Virgularia sp), Indonesia

Chris Newbert / Sea Anemone Crab (Lissocarcinus laevis), Indonesia

Chris Newbert / Porcelain Crab (Porcellanidae) at base of an anemone, Indonesia

Norbert Wu / Spotted Anemone Crab (Neopetrolisthes maculatus) in anemone, Komodo Island, Indonesia

Chris Newbert / Porcelain Crab (Porcellanidae) on Sea Pen (Scytalium sarsii), Papua New Guinea

Chris Newbert / Spotted Anemone Crab (Neopetrolisthes maculatus) in Anemone, 50 feet deep, Papua New Guinea

Chris Newbert / Spotted Anemone Crab (Neopetrolisthes maculatus) feeding on plankton with feather net arms, 50 feet deep, Papua New Guinea

Chris Newbert / Spotted Anemone Crab (Neopetrolisthes maculatus) on Anemone mantle (Stichodactyla sp) feeding on plankton with feather net arms, 70 feet deep, Solomon Islands

Chris Newbert / Spotted Anemone Crab (Neopetrolisthes maculatus) female on her Anemone home (Stichodactyla mertensii) feeding on plankton with her feather net arms, with eggs held in brood pouch formed by tail, 50 fe...

Chris Newbert / Spotted Anemone Crab (Neopetrolisthes maculatus) female on her Anemone home (Stichodactyla mertensii) feeding on plankton with her feather net arms, with eggs held in brood pouch formed by tail, 50 fe...

Chris Newbert / Spotted Anemone Crab (Neopetrolisthes maculatus) female on her Anemone home (Stichodactyla mertensii) feeding on plankton with her feather net arms, with eggs held in brood pouch formed by tail, 50 fe...

Hiroya Minakuchi / Spotted Anemone Crab (Neopetrolisthes maculatus) living in Sea Anemone tentacles, Sulu Sea, Borneo, Malaysia

Norbert Wu / Spotted Anemone Crab (Neopetrolisthes maculatus) pair throwing out fine nets to trap plankton, Seychelles

Chris Newbert / Spotted Anemone Crab (Neopetrolisthes maculatus) on Sea Anemone, Ponape, Micronesia

Birgitte Wilms / Spotted Anemone Crab (Neopetrolisthes maculatus) female on Anemone (Stichodactyla mertensii) home with eggs held in brood pouch formed by tail, feeding on plankton with her feather net arms, Solomon I...

Birgitte Wilms / Spotted Anemone Crab (Neopetrolisthes maculatus) feeding, Solomon Islands

Alex Mustard / Saddleback anemonefish (Amphiprion polymnus) and a Spotted porcelain crab (Neopetrolisthes maculatus) living together in an anemone. Bitung, North Sulawesi, Indonesia, Lembeh Strait, Molucca Sea.

Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) in a rockpool, The Gower, Wales, UK, September.

Francisco Marquez / Porcelain crab (Porcellanidae) on white background, Islas Marias Archipelago, Mexico.

Georgette Douwma / Spotted porcelain crab (Neopetrolisthes maculatus). Lembeh Strait, North Sulawesi, Indonesia.

David Hall / Porcelain crab (Porcellanella haigae) on Sea pen (Veretillum sp). Pantar, Alor Archipelago, Lesser Sunda Islands, Indonesia.

David Hall / Soft coral porcelain crab (Lissoporcellana nakasonei) pair in Organ pipe coral (Tubipora musica). Pantar, Alor Archipelago, Lesser Sunda Islands, Indonesia.

Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) camouflaged in a rock pool, moves away, Gower Peninsula, Glamorgan, Wales, UK, August.

David Fleetham / Two tiny mysid shrimp in front of a Porcelain crab, (Neopetrolisthes maculatus) in sea, Philippines.

Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) well camouflaged in rockpool, The Gower, Wales, UK, August.

Georgette Douwma / Saddleback anemonefish (Amphiprion polymnus) with a Spotted anemone porcelain crab (Neopetrolisthes maculatus) perched on the edge of the anemone. Tulamben, Bali, Indonesia.