Abraded sponges like this one at Alligator Reef are found throughout the Florida Keys National Marine Sanctuary

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Abraded sponges like this one at Alligator Reef are found throughout the Florida Keys National Marine Sanctuary

© Steve Gittings / NOAA

Abraded sponges like this one at Alligator Reef are found throughout the Florida Keys National Marine Sanctuary photo copyright Steve Gittings / NOAA taken at and featuring the class

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