Aquatic invertebrates belonging to the phylum Porifera having internal skeletons of silica or collagen, porous body around a cavity or cavities, and usually living in stationary communities.
- Biological resource status and trends: Corals and sponges [More info]
- Information concerning status and trends of biological resources, focusing on corals and sponges
- Nonindigenous sponge distribution information [More info]
- Descriptions of sponges and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on sponges.