Echinoidea | Diadematoida
Environment: milieu / climate zone / depth range / distribution range
Benthic; depth range 0 - 70 m (Ref. 81020). Tropical
Indo-Pacific: East Africa to the South Pacific Islands and Japan.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 25.0 cm WD male/unsexed; (Ref. 87866)
Occurs in shallow waters, especially in disturbed areas where it occurs in large aggregations. Feeds on algae. Associated with Stegopontonia commensalis (commensal) (Ref. 800).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the class Echinoidea are gonochoric. Fertilization is external. Brooding is common, eggs are held either on the peristome, around the periproct or deep into the concavities on the petaloids. Life cycle: Embryos develop into planktotrophic larvae (echinoplateus) and live for several months before they sink to the bottom using their tube feet to adhere on the ground where they metamorphose into young urchins.
Schoppe, S. 2000. (Ref. 800)
IUCN Red List Status (Ref. 124695)
CITES status (Ref. 108899)
Threat to humans
| FishSource | Sea Around Us
Estimates of some properties based on models
): 21.1 - 28.8, mean 27.2 (based on 794 cells).
Low vulnerability (10 of 100)