|Airdate||December 18, 2006|
Underwater World stars Cassie and Rita. It is aired December 18, 2006.
Cassie and Rita are on a boat getting ready to go scuba diving. Cassie reads out a letter on what's it like underwater. The movie goes on talking about the different ocean zones and animals and food chains. At the end, a shark swims by, and Cassie and Rita swim away in fear.