It's beach day, and the whole class is excited. Everyone except Arnold and Keesha, that is. They forgot their report on two beach things that go together. All Arnold and Keesha have is a tuna fish sandwich and some smelly green pond scum. What could those two things possibly have in common? "The best way to learn about something is to jump right in," Ms. Frizzle announces. A second later the Magic School Bus dives right into the ocean!
　　Come on an underwater adventure and learn about food chains.
　　From an episode of the animated TV series produced by Scholastic Entertainment Inc. Based on The Magic School Bus books written by Joanna Cole and illustrated by Bruce Degen.