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Purple Acropora Coral
This purple coral is know as an acropora coral. It is a type of hard coral that grows in colonies that build large plate-like structures on the coral reef. Purple Acropora corals vary in color from deep, dark purple to a lighter, almost violet shade of purple. Acropora corals are common in the reef aquarium hobby because they are relatively easy to keep.
Image © Dover Publications 1993, IMSI 1997
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