Is there a monster living in Walker Lake? That's what Ms. Frizzle's class is trying to find out. The kids try to dive down under the water, but the bus won't go! The class has to figure out how to turn their floater into a sinker so they can solve the mystery of the underwater monster.
Take a dive with the Magic School Bus, and learn why things float and sink!
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.