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Image of a large elkhorn coral formation on a coral reef
Courtesy NOAA Photo Archive
  Image 1-19
Elkhorn Coral

Elkhorn coral is named for its shape, which resembles the horns of an elk. It is a member of the acrpora family of corals and is also known as a stony coral. Its hard calcium skeleton helps to build up the reef over time. Corals like this provide shelter for many small species of fish and invertebrates.

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