We'll Have a Whale of a Time! - S1.E25

While riding on the back of a blue whale named Blubber, Jin Jin, Rudy, Benji, Squawk, and Betty are pursued by Grimster and Hopper. As Jin Jin's group and Betty enters Blubber's mouth, he takes them underwater as Hopper shoots a tracking device on Blubbler. After some squids help provide cover, they continue to avoid Grimster and Hopper even when they cross the tundra and gain help from Betty's parents.