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18.https   www inaturalist org photos 1667754
Phil Bendle   cc-by-nc-4.0

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.

EOL has data for 24 attributes, including:

Known occurrences, collected specimens and observations of sponges