Within a single drop of stagnant water may be found thousands of tiny organisms called protists. See the Euglena, which has both plant and animal characteristics, and the amoeba's puzzling movement. Discover that seemingly featureless ooze from the ocean floor is composed of billions of discarded shells and skeletons of marine protists. View the digestive process of paramecium. Finally, see the beginnings of primitive social organization as thousands of single cells join together to form the colonial protist volvox.-.

May include teacher's guide.