A hermit crab who has outgrown his old shell moves into a new one, which he decorates and enhances with the various sea creatures he meets in his travels.

The pout-pout fish believes he only knows how to frown, even though many of his friends suggest ways to change his expression, until one day a fish comes along that shows him otherwise.

As Pete the Cat searches underwater for a seahorse, he comes into contact with all manner of sea creatures.

Danny Dragonbreath and his friend Wendell get an up-close underwater tour of the Sargasso Sea from Danny's sea-serpent cousin, encountering giant squid and mako sharks--and learn about standing up to bullies in the process.

Ever since her father was lost at sea, Sophia has been moping around Aqualand, a marine theme park. But Sophia's world is turned upside-down when an "aquanaut" breaks into the park's research lab. To her amazement, Sophia discovers that the aquanaut is not what it seems: inside lives a band of goofy sea creatures! And when they all realize that Aqualand is more sinister than advertised, Sophia is determined to help the aquanaut crew free the park's...

When Clark the Shark has a loose tooth, he has to go to a dentist, but Clark has heard that the dentist is scary.

While on a field trip to the farmers' market, Clark becomes separated from his classmates and must use his rhyming skills to help him remember his teacher's instructions.

Mr. Fish feels nervous venturing deep in the sea to look for Ms. Clam's lost pearl until Miss Shimmer helps him conquer his fear of the dark.

With the help of his friends, Mr. Fish is able to overcome his anger.

When SpongeBob and friends form a rock band, Squidward is resentful, and he steals their instruments.