Students explore the world of microorganisms and their benefits in nature. They learn how different species adapt to their environment and form symbiotic relationships with one another. The series also discusses the structures and functions of various species that enable them to thrive and help maintain a healthy ecosystem. Segments include: Ciliates, Feeding of Microorganisms, From Eggshell to Bodyshell, Locomotion of Microorganisms, Microorganisms in Polluted Water, Mosquitos The Double Life, The Reproduction of Microorganisms, Rotifers, and Water Fleas. This DVD contains all nine segments. In addition, each segment is also streamed individually. (See "Series" note below).