They could make the Aquaman movie funny, though. Like, Jim Carrey is Aquaman, and he gets his magic powers from a bump on the head or something. Or he accidentally ingests some radioactive fish food at a nuclear test site. Anyway, he goes home and his goldfish start talking to him and freaking him out.
Once he gets used to his powers (and uses them comedically for his own purposes), he starts fighting crime by commanding whales and sharks and stuff to tip over bad guys' boats in the harbor, thus helping the Coast Guard foil drug/weapon smugglers, etc.
Also, he should have his sealife companions rescue a sinking ocean liner or trapped submarine. And it would be funny if a horny lady seal was always trying to hump him.
The villian would have to be some generic mad scientist or something. Maybe he figures out a way to control fish through machinery, and it backfires horribly at the end, killing him.
C'mon, gang! Aquaman the movie! Yeah!