Crustaceans have segmented bodies like insects! Their bodies are divided into three sections - the head, the thorax, and the abdomen. The head has two pair of antennae, a pair of compound eyes, and a pair of mandibles. They have pairs of branched appendages on each segment of their bodies.

How many body segments does a crustaceans have?

Crustaceans have three distinct body parts: head, thorax, and abdomen (or pleon), although the head and thorax may fuse to form a cephalothorax.

Do crabs have segments?

They have exoskeletons and their bodies have three main sections: the head, the thorax, and the abdomen. In most species, the head and the thorax are fused in one section called the cephalothorax. ... Their head has five segments, their thorax has eight segments, and their abdomen has 6-7 segments.