A numerous set of fourteen footed Crustacea inhabiting both fresh and sodium water The body is normally compressed laterally plus the anterior pairs or feet tend to be directed downward and ahead but the posterior feet are turned upward and backward The beach flea is an illustration See Tetradecapoda and Arthrostraca
- little flat-bodied semiterrestrial crustaceans: whale lice; sand-hoppers; skeleton shrimp
- A numerous number of fourteen -- footed Crustacea, inhabiting both fresh and sodium water. The human body is usually compressed laterally, and anterior pairs or feet tend to be directed downward and ahead, although posterior feet are switched upward and backward. The beach flea is a good example. See Tetradecapoda and Arthrostraca.
In some Amphipoda the secretion of glands on the body and limbs is used in the construction of tubular cases in which the animals live.