Calappa hepatica

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Calappa hepatica
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Brachyura
Family: Calappidae
Genus: Calappa
Species: C. hepatica
Binomial name
Calappa hepatica
Linnaeus, 1758

Calappa hepatica is a common benthic crab of tropical and subtropical parts of the Indian and Pacific Oceans and the Red Sea. It is also known as the box crab, shame-faced crab or the tortoise crab, the last two names referring to the animal's appearance, with its two chelipeds (claw-bearing limbs) being used to shield the "face", giving the crab almost impregnable armour. The carapace is covered in small lumps, and is generally white to golden in colour.