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Last updated on April 23, 2014 at 15:23 EDT

Sandalolitha robusta

Sandalolitha robusta is a species of dome coral in the family Fungiidae. It is found in the Indo-Pacific oceanic region. This is a large, colonial coral that does not attach to substrate along the seabed. Polyps are embedded in numerous individuals corallites and are separate from one another. They are bordered by alternating wide and narrow septae, calcareous (calcium carbonate) ridges which bear serrated spines. The spines on the costae, the ridges which join the septae to other corallites, are minutely spiny. The polyps extend their tentacles only at night to feed.

Sandalolitha robusta