There are many wonders to be seen in the ocean, but when you're famous cartoons like Donald Duck, Mickey Mouse and Goofy your expectations are much higher than that of the average human- with good reason.
Living in a cartoon means anything can happen, and any kind of creature imaginable can appear in the illustrated ocean, from a realistic render to something totally bizarro that could only exist as a 'toon.
So when the trio jump in Doctor Von Drake's submarine ride to see what lies under the sea they're sorely disappointed by the lack of aquatic characters...until they go deeper, deeper, DEEPER!