Polymastia is a genus of sea sponges containing about 30 species. These are small to large encrusting or dome-shaped sponges with a smooth surface having many teat-shaped projections (papillae). In areas of strong wave action, this genus does not grow the teat structures, but instead grows in a corrugated form.
Halichondria is a genus of sea sponges belonging to the family Halichondriidae. These are massive, amorphous sponges with clearly separated inner and outer skeletons consisting of bundles of spicules arranged in a seemingly random pattern.
Spongia is a genus of marine sponges in the family Spongiidae, originally described by Carl Linnaeus in 1759, containing more than 60 species. Some species, including Spongia officinalis, are used as cleaning tools, but have mostly been replaced in that use by synthetic or plant material.
Hymeniacidon is a genus of sea sponges in the class Demospongiae. Some members of the genus are known to be mobile, achieving speeds of between 1 and 4 mm per day.
Stelletta is a genus of sea sponges belonging to the family Ancorinidae.
Clathria is a large genus of demosponges in the family Microcionidae.
Echinoclathria is a genus of demosponge in the family Microcionidae.
Biemna is a genus of sea sponges in the family Biemnidae.
Haliclona is a genus of demosponges in the family Chalinidae.
Ircinia is a genus of sea sponges in the family Irciniidae.
Amphimedon is a genus of sponges with over 60 described species. In 2009, Amphimedon queenslandica was the first species of sponge to have its genome sequenced.
Myxilla is a genus of demosponge belonging to the family Myxillidae. These sponges usually form encrustations on rock surfaces.
Callyspongiidae is a family of sea sponges in the order Haplosclerida. It contains the following genera and species:
Gelliodes is a genus of sponges in the family Niphatidae.
Clathria (Clathria) is a subgenus of demosponge in the family Microcionidae.
Tedania is a genus of sea sponges in the family Tedaniidae.
Mycale is a genus of demosponge with 240 recognised species in 11 subgenera. It has been a large genus with multiple subdivisions since it was first described in 1867.
Dysidea is a genus of sponges belonging to the family Dysideidae.
Phakellia is a genus of sponges belonging to the family Bubaridae. The genus has a cosmopolitan distribution.
Phorbas is a genus of demosponges belonging to the family Hymedesmiidae.
