David Fleetham / Goby (Eviota sp) and juvenile porcelain crab (Pteroeides sp), on a Seapen. Komodo National Park, Indonesia.

David Fleetham / Porcelain crab (Porcellanella picta) hiding between the blades of the Seapen (Pteroeides sp). Komodo, Indonesia.

Georgette Douwma / Sea pen (Virgularia gustaviana) with a small porcelain crab on sandy sea bed, purple form. Rinca, Indonesia.

Juergen Freund / Anemone crab {Neopetrolisthes ohshimai} in sea anemone, Indo Pacific

Constantinos Petrinos / Porcelain crab amongst anemone tentacles, Solomon Islands, Pacific

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

Pascal Kobeh / Porcelain crab ((Porcellanella triloba) living commensally on Purple sea pen (Virgularia gustaviana). Flores Sea, Indonesia.

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

David Fleetham / Porcelain crab (Neopetrolisthes maculatus), on anemone. The Island of Yap, Caroline Islands, 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.

MYN / Les Meade / Flat-top Porcelain Crab (Petrolisthes eriomerus) Meadowdale Beach, Puget Sound, Snomish County, Washington, June, meetyourneighbours.net project

Franco Banfi / Spotted porcelain crab (Neopetrolisthes oshimai) on sea anemone, at Din ding warna banjak dive site, Kervo island, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

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

Georgette Douwma / Porcelain crab (Neopetrolisthes maculatus) feeding, Manado, North Sulawesi, Indonesia

Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) hiding in a rockpool among Mussels (Mytilus edulis) and Gutweed (Ulva / Enteromorpha intestinalis), near Falmouth, Cornwall, UK, August.

Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) among encrusting red algae (Lithothamnion sp.) in a rockpool, near Falmouth, Cornwall, UK, August.

Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) well camouflaged among Coralweed (Corallina officinalis) and encrusting red algae (Lithothamnion sp.) in a rockpool low on the shore, near Falmouth...

Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) well camouflaged among red algae in a rockpool, near Falmouth, Cornwall, UK, August.

Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) hiding behind Gutweed (Ulva / Enteromorpha intestinalis) in a rockpool alongide a Flat / Purple top shell (Gibbula umbilicalis) and a Limpet (Patel...

Alex Hyde / Broad-clawed Porcelain Crab (Porcellana platycheles) on rock. Isle of Skye, Inner Hebrides, Scotland, UK, March.

Alex Hyde / Broad-clawed Porcelain Crab (Porcellana platycheles) against white background. From the Isle of Skye, Inner Hebrides, Scotland, UK.

Alex Hyde / Broad-clawed Porcelain Crab (Porcellana platycheles) on white background. From the Isle of Skye, Inner Hebrides, Scotland, UK.

Juergen Freund / Porcelain anemone crab (Neopetrolisthes maculatus) among tentacles of anemone, Indo-pacific.

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

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

Juergen Freund / Sea pen porcelain crabs (Porcellanella triloba) in sea pen (Pteroides sp.). Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Pen Crab (Porcellanella triloba) perched in Sea Pen (Virgularia sp.), from where the crab filter feeds in the current. Rinca, Indonesia. October.

Georgette Douwma / Pen Crab (Porcellanella triloba) perched in Sea Pen (Virgularia sp.). Filter feeding setae mouthparts of the crab are visible. Rinca, Indonesia, October.

Georgette Douwma / Porcelain Crab (Neopetrolisthes maculatus) with feeding setae fans visible, amongst tentacles of anemone. Rinca, Komodo National Park, Indonesia, October.

Georgette Douwma / Sea pen porcelain crab (Porcellanella triloba) in Sea pen (Virgularia gustaviana) Porcelain crabs are filter feeders and climb in the sea pen to take advantage of current. When the Sea pen retreats in...

Georgette Douwma / Sea pen porcelain crab (Porcellanella triloba) in Sea pen (Virgularia gustaviana) Porcelain crabs are filter feeders and climb in the sea pen to take advantage of current. When the Sea pen retreats in...

Tim Laman / Anemone / Porcelain crab (Neopetrolisthes maculatus) in its host anemone. Malapascua Island. Visayan Sea, Philippines

Georgette Douwma / Pen crab (Porcellanella triloba) resting in Sea pen (Pteroeides) to feed on plankton, Rinca, Indonesia

Robert Thompson / Broad clawed porcelain crab {Porcellana platycheles} Ballyhenry Point, Strangford Lough, County Down, Northern Ireland, August

Robert Thompson / Broad clawed porcelain crab {Porcellana platycheles} Ballyhenry Point, Strangford Lough, County Down, Northern Ireland, August

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

Georgette Douwma / Unidentified porcelain crabs (Pteroeides sp.) on Sea pen, Rinca, Indonesia

Juergen Freund / Anemone crab {Neopetrolisthes ohshimai} in sea anemone, Indo Pacific

David Hall / Anemone crab (Neopetrolisthes ohshimai) Indonesia

Juergen Freund / Anemone crab (Neopetrolisthes ohshimai) in sea anemone, Indo-Pacific

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

Doug Perrine / Porcelain crab {Neopetrolisthes maculatus} on Sea anemone {Cryptodendrum adhaesivum} Surin Is, Thailand

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...

Juergen Freund / Anemone crab on anemone. Philippines, Pacific Ocean

Juergen Freund / Anemone crab on anemone. Pacific, Phillipines

GEORGETTE DOUWMA / Porcelain crab filter feeding, Similan Islands,Thailand

Juergen Freund / Anemone crab (Neopetrolisthes ohshimia) in anemone. Philippines, South Pacific

GEORGETTE DOUWMA / Porcelain crab {Neopetrolisthes maculatus} on anemone. Milne Bay, Papua New Guinea

GEORGETTE DOUWMA / Porcelain crab {Neopetrolisthes maculatus} on sea anemone. Milne Bay, Papua New Guinea

GEORGETTE DOUWMA / Porcelain crab filter feeding, Similan Islands, Thailand

David Fleetham / Porcelain crab (Neopetrolisthes maculatus) on a bed of pale green anemone, Mabul Island, Malaysia.

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

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

Peter Scoones / Porcelain crab catching plankton {Neopetrolisthes maculatus} Andaman sea Thailand

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.