Have spicules made of silicon dioxide (SiO2) or spongin or a combination of both Most sponges belong to this class (90%) Nearly all are leuconoid body type Mostly found on the continental shelf Spongia spp. (Bath sponge
Have spicules made of silicon dioxide (SiO2) or spongin or a combination of bothMost sponges belong to this class (90%) Nearly all are leuconoid body typeMostly found on the continental shelfSpongia spp. (Bath sponge