Very systematic breakdown of the animal kingdom starting with the simplest type the sponge, all the way to the chordate or vertebrate. Each phylum has a link with information.

WormWatch is a Canadian program that uses volunteers to observe changes in the earthworms in their environments, and submit their observations. Monitoring earthworms provides valuable information about the health of local soils so that...

Informational facts on worms with directions on how to vermicompost, where worms turn garbage into plant food.