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File:Halimeda incrassata (calcareous green algae) (San Salvador Island, Bahamas) 5 (15867360579).jpg

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Halimeda incrassata (Ellis, 1768) on shallow, aragonitic sandy seafloor.

Halimeda species are calcareous green algae consisting of upright stacks of greenish-colored, usually flattened segments. Each segment has an internal chip of calcium carbonate (aragonite, CaCO3). After the algae die and the soft parts decay away, the aragonitic chips become sand-sized seafloor sediments. A significant percentage of shallow seafloor and shoreline sediments in the Bahamas is from calcareous algae.

The fuzzy algae surrounding the Halimeda at center are Batophora dasyclad green algae.

Classification: Chlorophyta, Caulerpales, Halimedaceae

Locality: shallow seafloor just west of North Point Peninsula, southeastern Graham's Harbour, northeastern San Salvador Island, eastern Bahamas
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Source Halimeda incrassata (calcareous green algae) (San Salvador Island, Bahamas) 5
Author James St. John

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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15867360579. 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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current21:13, 3 May 2015Thumbnail for version as of 21:13, 3 May 20154,000 × 3,000 (3.04 MB)Natuur12 (talk | contribs)Transferred from Flickr via Flickr2Commons

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