Lyre Sponge
Image: MBARI Meet the Lyre Sponge , a large harp- (or lyre -) shaped carnivorous sponge in the deep waters of the northeast Pacific Ocean... ...lloon-like ball, maximize the surface area of the sponge for capturing planktons....
https://www.neatorama.com/2013/05/24/Lyre-Sponge/
