Roly-polies are popular among children. However, their ecology is not as well known as one might think. In fact, they are not insects, but members of the same crustacean family as shrimps and crabs. They need calcium to make their hard outer skin, so they occasionally eat concrete. That is why they are often seen around us. Roly-polies are "nature's cleaners," eating fallen leaves and many other things. This is a nature observation picture book with warm and friendly pictures depicting their eco...
