The creature, whatever it is, has sparked some heated debate online, with many dismissing the image as a hoax.
A recent underwater expedition picked up footage of a surprisingly familiar looking sponge and starfish.
Divers have discovered an ancient, minivan-sized sea sponge in an ocean ridge off the coast of Hawaii.
A 23-year-old from North Tyneside is addicted to eating sponges dipped in apple washing-up liquid.
Four new species of carnivorous sponge have been identified in the depths off the coast of California.