Petrochirus diogenes is a giant marine hermit crab

Hermit crab

Hermit crabs are decapod crustaceans of the superfamily Paguroidea. Most of the 1100 species possess an asymmetrical abdomen which is concealed in an empty gastropod shell that is carried around by the hermit crab.-Description:...

. This species lives in the Caribbean Sea

Caribbean Sea

The Caribbean Sea is a sea of the Atlantic Ocean located in the tropics of the Western hemisphere. It is bounded by Mexico and Central America to the west and southwest, to the north by the Greater Antilles, and to the east by the Lesser Antilles....

, and often inhabits conch

Conch

A conch is a common name which is applied to a number of different species of medium-sized to large sea snails or their shells, generally those which are large and have a high spire and a siphonal canal....

 shells. This species of hermit crab is large enough that it can inhabit a fully grown shell of Eustrombus gigas. It will attack and eat a conch, thus obtaining a meal and a shell. It was originally described by Carl Linnaeus as Cancer diogenes; the specific epithet honours Diogenes of Sinope

Diogenes of Sinope

Diogenes the Cynic was a Greek philosopher and one of the founders of Cynic philosophy. Also known as Diogenes of Sinope , he was born in Sinope , an Ionian colony on the Black Sea , in 412 or 404 BCE and died at Corinth in 323 BCE.Diogenes of Sinope was a controversial figure...

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