Skeleton

What is a Skeleton?

A skeleton is like a special frame that helps animals stand, move, and keep their inside parts safe. Every animal, even you, has a skeleton! There are different kinds of skeletons, and each one is interesting in its own way.

Types of Skeletons

One type is called an exoskeleton. This is a hard shell on the outside of the body. Animals like crabs and beetles have exoskeletons. When they grow, they need to shed their old shell and make a new, bigger one.

Another type is an endoskeleton. This is inside the body and made of bones or special soft material called cartilage. Humans, fish, birds, and many other animals have endoskeletons. Your own body has bones that help you move and protect important parts inside.

Some animals, like jellyfish, have a hydroskeleton. This is a flexible support system that uses the pressure of body fluids to help them keep their shape and move.

Why Skeletons are Important

Skeletons are very important because they help animals do many things. They give shape to the body, help it move, and protect important parts inside. For example, birds have special lightweight bones that help them fly, and fish may have bones or just cartilage to help them swim.

Even though skeletons look different, they all work together to help animals live and move in their own special ways.