Echinoidea | Clypeasteroida
Environment: milieu / climate zone / depth range / distribution range
Benthic; depth range 50 - 200 m (Ref. 88950). Subtropical
Western Pacific. Tropical to subtropical.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
This is an epibenthic species found on muddy sand in subtidal areas. It has a paddling action that aids it to feed on detrital organic matter on the surface (Ref. 85384).
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.
Gibbs, P.E. 1978. (Ref. 3197)
IUCN Red List Status (Ref. 124695)
CITES status (Ref. 108899)
Threat to humans
| FishSource |
Estimates of some properties based on models
): 13.9 - 26.8, mean 22.5 (based on 428 cells).