DENDROLOGY

Detailed explanation-1: -Who lives in a pineapple under the sea? SpongeBob Squarepants… DUH! This super happy sea creature is The Krusty Krab’s number one fry cook and Bikini Bottom’s best laugh.

Detailed explanation-2: -The SpongeBob SquarePants theme makes sure the audience knows right away that the title character lives in a pineapple under the sea, which fits with the quirks and adorable weirdness of the famous sponge, but it still seems strange that he lives in it (and is the only character to live inside a fruit).