Introduction to freshwater invertebrates / James H. Thorp and Alan P. Covich -- An overview of freshwater habitats / James H. Thorp and Alan P. Covich -- Protozoa / William D. Taylor and Robert W.

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 ...

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.

Invertebrates dominate the animal kingdom, making up 97 percent of all creatures. These animals, lacking a backbone, display incredible diversity. From microscopic mites to giant squid, their ...

If you liked this story, share it with other people. Schoenherr’s blue weevil (Eupholus schoenherri) a spectacular blue and turquoise beetle from Indonesian New Guinea. Photo by Rhett A. Butler.