Understanding What an Exoskeleton Is
An exoskeleton is a hard outer covering that protects and supports an animal’s body. It works like armor and replaces the need for internal bones.
Animals That Have Exoskeletons
Insects: Ants, beetles, butterflies, and many more.
Crustaceans: Crabs, lobsters, and shrimp.
Arachnids: Spiders and scorpions.
What an Exoskeleton Does
It protects the animal from predators, prevents water loss, and provides structure for muscles to attach so the animal can move.
How Exoskeletons Grow
Because exoskeletons cannot stretch, animals must molt to grow. They shed their old shell and form a new, larger one.
Why Exoskeletons Are Useful
They are lightweight but strong, helping animals survive in varied environments—from deserts to oceans to forests.
Differences Between Exoskeletons and Endoskeletons
Exoskeletons are on the outside of the body, while endoskeletons (like human bones) are inside. Each type offers different strengths and adaptations.
The Simple Takeaway
An exoskeleton is a tough outer shell that protects animals and helps them move. It is essential for insects, crustaceans, and many other species.