This is a cross-stitch pattern, not a completed product. It is not a kit, and contains no floss or fabric. This chart was inspired by nature. Crabs are decapod crustaceans, which typically have a very short projecting "tail" usually entirely hidden under the body. They live in all the world's oceans, in fresh water, and on land, are generally covered with a thick exoskeleton and have a single pair of claws.