Long thought to be immobile, some sea sponges can actually move — but at a grisly price
Salon
4/29/2021
Demosponges in a coral reef in the Caribbean Sea Getty Images
Viewers of "SpongeBob Squarepants" have been woefully misinformed about the reality of being a sponges. Far from being yellow, rectangular and hyperactive, sponges come in all shapes, sizes and colors; they are believed to lack even SpongeBob's child-like intelligence; and, far from being hyperactive, most of them are not known to move at all.
At least, they
weren't known to move at all. New research may change what we know about them.