The Magic School Bus Rides Again Episode 13 - DA and the Deep Blue Episode Title:DA and the Deep Blue.Episode Description:While preparing to write a blog post about the ocean, Dorothy Ann gathers data with an advanced locket belonging to Jyoti's grandmother. When her fishing line breaks, and she loses the locket, Ms. Frizzle turns the bus into a submarine in order to help find it. Along the way, the students learn about undersea life and different depths.