Crustaceans are primarily , found in nearly every marine and freshwater environment on Earth.
: Highly valued in global fisheries for human consumption. crustacean
: Because their shells are rigid, crustaceans must periodically shed and regrow them to accommodate growth. Crustaceans are primarily , found in nearly every
: Their bodies are usually segmented, often featuring a cephalothorax (a fused head and trunk). Diverse Habitats and Ecological Roles Crustaceans are primarily