There are a great many different species of crustaceans, which colonise a wide range of habitats. They dominate the seas, as insects dominate the land.
The Spider Crab is captured in the traditional way with traps and nets. Taking them is banned from the end of June to the end of October. Their habitat is mainly the bays where the sea-floor is sandy, as is the case of the Bay of Muros, and where it is rocky, as throughout the "Death Coast" -- two of the most productive areas.
For many people the Spider Crab is one of the most highly valued seafoods because of its unmistakeable taste. In fact it has three distinct flavours, according to which part of the body you are sampling: legs, breast or head, each tastier than the others. Distinguishing the Galician Spider Crab from the French is its darker, more intense colouring and its hairy shell with encrusted algae; also its legs are larger.
The Velvet Crab is a decapod, in the Crab family. Its shell is grey-brown and has a covering of short hair like velvet. Its claws, larger in males, have dark lines towards the points. It features on the table in seaside towns, whose inhabitants particularly relish its flavour.