"Ward's Science"

The culture supplied includes copepods in various stages of development.

Mixed genera. Also known as scuds, amphipods are freshwater crustaceans.

Philodina sp. Easy to culture and easy to examine under a microscope because of the lack of a lorica (shell), these typical rotifers are perfect for general study. Culture instructions are included.

These bottom-dwelling bivalved crustaceans are found in nearly every aquatic habitat.

Hypsibius sp. The water bear is a complex animal representing the unusual phylum of Tardigrades, which contains about 400 marine, terrestrial, and freshwater species.