A typical episode of “SpongeBob SquarePants” runs 11 minutes. Now, for those who can’t get enough of that Laffy Taffy-yellow fellow with the googly eyes and giggly laugh, a feature-length outing must already sound like 10 times the fun. Toss in the hook that a mad scientist wants to clone all the sea creatures from his corner of the ocean, and you’ve potentially got more SpongeBob than even the most insatiable sponge-head can handle.

Dropping exclusively on Netflix, “Saving Bikini Bottom: A Sandy Cheeks Movie” shifts the focus ever so slightly away from our porous … er, eponymous hero. You know, that absurdist slab of absorbent optimism (voiced by Tom Kenny) who lent his name to the show for the past quarter century: SpongeBob SquarePants (who just crossed the 300-episode mark). For the uninitiated, Sandy Cheeks is the name of SpongeBob’s Stem-luvin’ squirrel friend, not a reference to the level...