There are millions of different types of living things on Earth. In order to keep track of them all, scientists put living things into groups based on characteristics that they have that are the same.

In this outdoor activity, your class will go on a bug hunt and become zoologists. They will come up with their own classification systems to sort common invertebrates into groups. This activity can be ...

Introduction to invertebrates of inland waters / James H. Thorp, Walter W. Dimmick, and Alan P. Covich -- An overview of inland aquatic habitats / James H. Thorp and Alan P. Covich -- Protozoa / ...

Highly diverse and charismatic, these creatures deserve recognition as a sixth great extinction dawns We are prone to obsessing over ourselves and over animals like us. But most of the life on Earth ...

For the next few weeks we’re asking readers to nominate their invertebrate of the year: click here to give us your suggestions Does a worm feel pain if it gets trodden on? Does a fly ache when its ...