Dipsastraea helianthoides (Wells, 1954)
Knob coral
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Family:  Merulinidae ()
Max. size: 
Environment:  reef-associated; marine; depth range 0 - 40 m
Distribution:  Indo-West Pacific.
Diagnosis:  Colony: submassive. Corallites: conical, mostly in uniform shape. Extra- and intratentacular budding both present. Well developed paliform lobes. Septa: neatly arranged, thickened over the wall. Costae: neat, and those of adjacent corallites adjoin. Color: brown, tan, or blue-gray with cream oral discs (Ref. 848).
Biology: 
IUCN Red List Status: Near Threatened (NT); Date assessed: 03 January 2008 Ref. 123251)
Threat to humans: 
Country info:   
 

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