Demospongiae [class]
(248 species)

Heteroscleromorpha [subclass] (214)

Agelasida [order] (11)

Axinellida [order] (17)

Biemnida [order] (3)

Bubarida [order] (2)

Clionaida [order] (17)

Haplosclerida [order] (46)

Merliida [order] (1)

Poecilosclerida [order] (62)

Scopalinida [order] (2)

Spongillida [order] (2)

Suberitida [order] (13)

Tethyida [order] (5)

Tetractinellida [order] (33)