Squat lobster

Squat lobsters are decapod crustaceans of the families Galatheidae and Chirostylidae, including the common genera Galathea and Munida. They are not lobsters at all, although they share a number of characteristics; they are, in fact, more closely related to porcelain crabs, hermit crabs and then, more distantly, true crabs. The body of a squat lobster is usually flattened, the abdomen is typically folded under itself, and the first pereiopods (front legs) are greatly elongated and armed with long chelae (claws).

It was long assumed that squat lobsters hide in crevices and catch prey with their long claws. However, recent observations showed the animals to wait on the tops of Lophelia coral reefs and catch fish swimming past.