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

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.

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

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

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

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

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