Heliocidaris crassispina (Agassiz, 1864)
Purple sea urchin
Heliocidaris crassispina
photo by Choi, Jong-Kwan

Family:  Echinometridae ()
Max. size:  7.675 cm WD (male/unsexed); max. reported age: 11 years
Environment:  benthic; marine; depth range 0 - 70 m
Distribution:  Northwest Pacific: Hong Kong.
Diagnosis:   
Biology:  Found on shallow waters (<5 meters), in intertidal pools (Ref. 124789) with rocky substrate (Ref. 119717). Occur on both sheltered and exposed shores. Clustered in rock crevices, or at the base and undersides of boulders. Aggregation suggests adaptive behavior to wave turbulence (Ref. 127097). An opportunistic feeder, but feeds mainly on algae (Ref. 125532).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:   
 

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