SpongeBob lives in a pineapple because pineapples are a common motif in Polynesian crafts. In addition, Hillenburg says he thought SpongeBob "would like the smell" of a pineapple home. Smell is a very important sense for sea animals.
According to SpongeBob's driver's license, he was born July 14, 1986. But he was already living on his own—and trying to get a job at the Krusty Krab—when the SpongeBob show debuted in 1999.
SpongeBob always tries to do his best. He's now helping out the New York City Department of Environmental Protection by urging kids to help save water. The campaign features an enormous SpongeBob—swollen from absorbing an entire bathtub of water—with the slogan "Save Water—Don't Drip New York Dry!"
