Crustáceos

Crustaceans (Subfilo Crustacea, from the Latin crusta = hard shell) are animals that possess a chitin skeleton, a characteristic of this group. The have five pairs of appendices and two pairs of antennae, and the body can be split in two ways: head, thorax and abdomen or the cephalothorax and abdomen. The majority of crustacean species live in the ocean, but they can also be found on land and in freshwater environments.