Encyclopedia
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Sponge: Encyclopedia - Sponge
Calcarea
Hexactinellida
Demospongiae
The sponges or poriferans (from Latin porus "pore" and ferre "to bear") are animals of the phylum P...
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Encyclopedia
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Sponge: Encyclopedia Ii - Sponge - Ecology
Modern sponges are predominantly marine, with some species adapted to freshwater environments, ranging from the inter-tidal zone to depth...
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Encyclopedia
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Sponge: Encyclopedia Ii - Sponge - Anatomy
Sponges comprise only four types of cells:
Choanocytes (also known as "collar cells"), which line the spongocoel and function as the spo...
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Encyclopedia
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Sponge: Encyclopedia Ii - Sponge - Taxonomy
Sponges are divided into classes based on the type of spicules in their skeleton. The three classes of sponges are bony (Calcarea), glass...
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