SpongeBob and Friends: Splendor in the Kelp:

"SpongeBob creator Stephen Hillenburg, who has a background in marine biology, had to be aware that in creating a cartoon sponge he'd be opening himself up to charge of marine-based immorality. Sponges can reproduce asexually, for example. And if Dobson's followers don't object to that, I'm sure they'll be distressed to learn that they also can be hermaphrodites. Single sponges not only produce both sperm and eggs but are broadcast spawners, indiscriminately releasing sperm in such profusion as to turn seawater smoky white.

Life in the sea, in fact, is largely about reproduction, not traditional family values. "