The Science Guy knows everyone who's anyone on the ocean's food chain, from the tiny, meek species at the bottom, all the way to the large, ferocious species at the top. Bill goes underwater to talk about ocean ecosystems and the importance of small organisms such as coral, plankton, and kelp.

Originally an episode of the television program Bill Nye, the science guy. Features: fully indexed "chapters" correlated to National Science Standards; interactive glossaries and quizzes; bonus footage of never-before-seen segments, interviews, and demos; on-disk implementation guide.