Belinda the sea sponge has a lot going on for an animal that can't go anywhere ... It's meant to be a feminine play on the cartoon character SpongeBob SquarePants, Leys says, though sea sponges ...

Either way, he says, "The reality is a little crueler than perhaps a cartoon would suggest." In scientific terms, a sponge is Hertwigia ... "These are literally animals that the public might ...

Nevertheless, marine scientist Christopher Mah quickly spotted the resemblance between the Nickelodeon cartoon characters and a real-life yellow sponge and ... the animal extends its stomach ...