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Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (/pəˈrɪfərəˌ pɔː-/; meaning 'pore bearer'). They are sessile filter feeders that are bound to the seabed, and are one of the most ancient members of macrobenthos, with many historical species being important reef-building organisms.
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sponges species cells water animals spicules mesohyl may demosponges also choanocytes found form food however types glass known many skeletons
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Otavia dates to as early as the Tonian period | instance of | Fossil evidence of primitive sponges | 0.80 | text |
| cyanobacteria | instance of | some become mixotrophic by hosting symbiotic photosynthetic microorganisms | 0.80 | text |
| algae | instance of | some become mixotrophic by hosting symbiotic photosynthetic microorganisms | 0.80 | text |
| rocks | instance of | and is the only skeleton in soft sponges that encrust hard surfaces | 0.80 | text |
| ammonia also diffuse | instance of | into which carbon dioxide and other soluble waste products | 0.80 | text |
| rocks | instance of | The greatest numbers of sponges are usually found on firm surfaces | 0.80 | text |
| but some sponges can attach themselves to soft sediment by means of a root-like base.Sponges are more abundant but less diverse in temperate waters than in tropical waters | instance of | The greatest numbers of sponges are usually found on firm surfaces | 0.80 | text |
| possibly because organisms that prey on sponges are more abundant in tropical waters | instance of | The greatest numbers of sponges are usually found on firm surfaces | 0.80 | text |
| bryozoans or sea squirts from growing on or near them | instance of | They also produce toxins that prevent other sessile organisms | 0.80 | text |
| making sponges very effective competitors for living space | instance of | They also produce toxins that prevent other sessile organisms | 0.80 | text |
| hermit crabs commonly have a specific species of sponge | instance of | Other crustaceans | 0.80 | text |
| Pseudospongosorites | instance of | Other crustaceans | 0.80 | text |
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