marine sponges in the family spongiidae for education.

animal aquatic background bath bathroom body clean coral demospongiae earth education educationn endoskeleton family fiber flexibility globular hole hygiene invertebrate life marine nature object organic ostium parazoa pore porifera porous protein reef reflective rough sea simplicity skincare snowball spa sparse species spicules spoggos sponge sponges spongiidae spongin spongocoel structure underwater wash water yellow