Exoskeleton synonyms

Many corals have a hard exoskeleton made of calcium carbonate.

Prawns and shrimps have a rigid exoskeleton that protects the soft internal structure.

We come, accordingly, to regard it as practically an exoskeleton, and its functions as distinctly subordinate to those of the protoplasm which it clothes.

Trilobites are an extinct group of arthropod - animals with jointed exoskeleton like crabs, shrimps and lobsters.

However, crabs are very successful marine animals, so that unwieldy suit of armor, or exoskeleton, must have its advantages.