Tui De Roy / Strawberry land hermit crab (Coenobita perlatus). On white coral sand beach, Small unhinhabited coral islet in Raa Atoll lagoon, Maldives

Fred Olivier / Tawny hermit crab (Coenobita rugosus) emerging from its shell, Christmas Island, Indian Ocean, Australian Territory.

Visuals Unlimited / Deep-sea Hermit Crab outside a shell (Pagurus curacaoensis)

Alex Mustard / 2020VISION / Common hermit crab (Pagurus bernhardus), Loch Leven, Ballachulish, Scotland, UK, April

MYN / Jerry Monkman / Acadian hermit crab (Pagurus acadianus) emerging from shell, Rye, New Hampshire, USA, January. meetyourneighbours.net project

David Shale / Deepsea Hermit crab with zoanthid (Epizoanthus sp) on shell, from a coral seamount in the Indian Ocean, November 2011

Alex Mustard / 2020VISION / Hermit crab (Pagurus bernhardus) moving forward, Loch Long, Argyll and Bute, Scotland, UK, April. Did you know? Despite their name, hermit crabs can be quite sociable creatures.

Jurgen Freund / Land Hermit crab using a plastic bottle cap as its home. Kavieng, Papua New Guinea, June 2010

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

Ingo Arndt / Robber / Coconut Crab (Birgus latro) close up of head and legs, Christmas Island, Indian Ocean, Australian Territory

Wild Wonders of Europe / Lundgren / Hermit crab (Pagurus pubescens) on Kelp, Saltstraumen, Bodö, Norway, October 2008

Wild Wonders of Europe / Lundgren / Pair of Common hermit crabs (Pagurus bernhardus) male carrying female until she leaves her shell and they can mate, Trondheimsfjorden, Norway, February 2009

Kim Taylor / Land hermit crab (Coenobita species) captive, Southern Madagascar

Solvin Zankl / Anomuran larva of a Hermit crab, Atlantic ocean

David Shale / (Neolithodes sp) a benthic, deep sea crab., deep sea Atlantic ocean

Doug Perrine / Coconut / Robber crab climbing palm tree {Birgus latro} Palau, Micronesia

Constantinos Petrinos / Red hermit crab {Dardanus megistos} Sulawesi, Indonesia

Franco Banfi / Hermit crab (Dardanus calidus) Mitigliano Cave, Punta Campanella Marine Protected Area, Amalfi Coast, Italy, Tyrrhenian Sea, Mediterranean.

Franco Banfi / Sea anemone (Calliactis parasitica) usually associated with hermit crabs, here on a Mediterranean bonnet shell (Semicassis granulata), Ponza island, Italy, Tyrrhenian Sea, Mediterranean.

Franco Banfi / Great hermit crab (Dardanus arrosor). Santa Maria Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Hermit crab (Dardanus arrosor), with Shoal of Ornate wrasse (Thalassoma pavo) Santa Maria Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Great hermit crab (Dardanus arrosor). Santa Maria Island, Azores, Portugal, Atlantic Ocean

Magnus Lundgren / Wild Wonders of China / Tiny hermit crab (Paguridae sp) living in a hole in the reef, Green Island, Taiwan.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Hermit crab (Calcinus californiensis) in snail shell (Cerithium sp) on white background, Islas Marias Archipelago, Marias Biosphere Reserve, Mexico.

Francisco Marquez / Hermit crab outside of shell on white background, Islas Marias Archipelago, Marias Biosphere Reserve, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Francisco Marquez / Terrestrial hermit crab (Coenobitidae) Islas Marias Archipelago, Mexico.

Aflo / Hermit crab (Dardanus guttatus) in cowrie shell, Okinawa, Japan.

Alex Mustard / Morgan's reef hermit crab (Paguritta morgani) living in its hole, surrounded by orange sponge the wooden leg of a jetty. Arborek Island, Raja Ampat, West Papua, Indonesia. Dampier Strait, Tropical Wes...

Georgette Douwma / Jeweled anemone crab (Dardanus gemmatus) in a field of burrowing brittlestars. Lembeh Strait, North Sulawesi, Indonesia.

Brandon Cole / Hairy netted hermit crab (Aniculus retipes), Palau, Pacific Ocean.

David Tipling / Stawberry hermit crab (Coenobita perlatus) juvenile, climbing over washed up rubbish, plastic bottles and shoes, on beach, Wizard Island, Cosmoledo Atoll, Seychelles

David Tipling / Stawberry hermit crab (Coenobita perlatus) juvenile, Wizard Island, Cosmoledo Atoll, Seychelles

David Tipling / Stawberry hermit crab (Coenobita perlatus) on beach, Wizard Island, Cosmoledo Atoll, Seychelles

David Hall / Hermit crab (Labidochirus splendescens) Slingsby Channel, Queen Charlotte Strait, British Columbia, Canada. September

David Hall / Blackeyed hermit crab (Pagurus armatus). Port Neville, Johnstone Strait, British Columbia, Canada. February.

David Hall / Maroon hermit crab (Pagurus hemphilli) inside turban shell, Seven-tree Island, Browning Pass, British Columbia, Canada. September.

David Hall / Maroon hermit crabs (Pagurus hemphilli) in shells of Blue Topsnail (Calliostoma ligatum) Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.

David Hall / Greenmark hermit (Pagurus caurinus) Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.

Pascal Kobeh / Common hermit crab (Pagurus bernhardus) Russia. White Sea.