Winding leaf coral. Coral reefs are underwater structures made from calcium carbonate secreted by corals. Coral reefs are colonies of tiny animals found in marine waters that contain few nutrients. Ribbon reef - long narrow, possibly winding reef.

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Winding leaf coral. Coral reefs are underwater structures made from calcium carbonate secreted by corals. Coral reefs are colonies of tiny animals found in marine waters that contain few nutrients. Ribbon reef - long narrow, possibly winding reef.

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: animals, archival, archive, calcium, carbonate, colonies, coral, historical, history, leaf, marine, reef, reefs, ribbon, underwater, waters, winding