Spiny lobsters, also known as langouste or rock lobsters, are a family (Palinuridae) of about 60 different species of achelate decapod crustaceans. Spiny lobsters are also known as crayfish, sea crayfish or crawfish, (usually names for freshwater crayfish) particularly in Australia, New Zealand, South Africa and The Bahamas.
Although Spiny lobsters superficially resemble True lobsters in terms of overall shape and having a hard carapace and exoskeleton, the two groups are not closely related. Spiny lobsters can be easily distinguished from True lobsters by their very long, thick, spiny antennae and by the lack of chelae (claws) on the first four pairs of walking legs, although the females of most species have a small claw on the fifth pair. True lobsters have much smaller antennae and possess claws on the first three pairs of legs, with the first being particularly enlarged.