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File:Acropora palmata (elkhorn coral) (San Salvador Island, Bahamas) 2 (15513720893).jpg

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Acropora palmata (Lamarck, 1816) - elkhorn coral on a patch reef.

Stony corals have a patchy distribution in the shallow marine waters surrounding San Salvador Island. They occur as isolated individual colonies, in patch reefs, fringing reefs, and barrier reefs. Stony corals are scleractinian anthozoan cnidarians (there are also non-scleractinian stony corals in the fossil record, such as tabulates and rugosans). They consist of individuals or colonies of gelatinous polyps that secrete hard skeletons of aragonite (CaCO3). Most scleractinian corals live in warm, tropical to subtropical, photic zone environments (the shallow portions of the world’s oceans where sunlight penetrates). Microbes (Symbiodinium - Protista, Dinoflagellata/Pyrrhophyta) called zooxanthellae live in their tissues and need to be in sunlight to make their own food (photosynthesis), which is shared with the host coral animal. Scleractinian corals have stinging cells (nematocysts) in their tentacles that paralyze prey.

Classification: Animalia, Cnidaria, Anthozoa, Scleractinia, Acroporidae

Locality: patch reef in western French Bay, southwestern San Salvador Island, eastern Bahamas
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Source Acropora palmata (elkhorn coral) (San Salvador Island, Bahamas) 2
Author James St. John

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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15513720893. It was reviewed on 3 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

3 May 2015

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current15:45, 3 May 2015Thumbnail for version as of 15:45, 3 May 20154,000 × 3,000 (3.34 MB)Natuur12 (talk | contribs)Transferred from Flickr via Flickr2Commons

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