When you were younger, you may have learnt about a group of organisms called minibeasts. Animals commonly called minibeasts include caterpillars, worms and spiders.
Minibeasts are actually called invertebrates by scientists. Caterpillars, worms, snails, spiders and insects like wasps all have a tough outer case instead of a backbone. This case is called an exoskeleton.
From now on, we will no longer use the term minibeasts, instead we will call them by their proper scientific name, invertebrates.
Invertebrates get around in all sorts of ways. They can: fly, slither, swim and walk. Let's have a closer look.