Scorpion spider crab
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Infraorder:	Brachyura
Family:	Inachidae
Genus:	Inachus
Species:	I. dorsettensis
Binomial name
Inachus dorsettensis (Pennant, 1777)

Inachus dorsettensis, commonly known as the scorpion spider crab, is a species of crab generally found on loose substrates (stony bottoms to mud) from 6 metres (20 ft) depth down to about 100 m (330 ft).^[1]

They are usually seen covered with sponge which they apply themselves. The carapace of a fully grown male is roughly 30 millimetres (1.2 in) long and slightly narrower than it is long.^[1][2]

Inachus dorsettensis resembles the closely related species Inachus phalangium, but has more prominent spines on the carapace.^[1] They molt, with the intermolting period being shorter the warmer the water they reside in is.^[3]

Scorpion spider crab is found along the east coast of the Atlantic Ocean from Norway to South Africa, and also in the Mediterranean Sea.^[1]

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