Sponges is a group of animals. There are 9049 species of sponges, in 747 genera and 143 families. This group has been around since the Ediacaran Period. Porifera (sponges) includes groups like Demosponges, Calcareous sponges , and Hexactinellid sponges. Porifera (sponges) is a sessile animal.
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