Some insects go through complete metamorphosis. They change form. Here are three examples.
Bees
Many bees make cocoons (above). Young bees are called larvas. They are wormlike. They spin a cocoon, like in the photo above. They spend a week or two in the cocoon. They grow eyes, legs, and wings in there.
Butterflies
TERRYFIC3D/GETTY IMAGESButterflies are known for their changes. As larvas, they are caterpillars. They grow and shed. Then they enter a chrysalis, as in this photo. It protects them. Weeks pass. The butterfly hatches.
Ants
SCOTT SMITH—GETTY IMAGESAnts hatch from eggs as larvas. The larvas have no eyes or legs. They grow into pupas. The pupas have folded legs and antennas. Some species spin cocoons. A cocoon protects the pupa as it grows.