Echinoidea | Echinoida
Environment: milieu / climate zone / depth range / distribution range
Benthic; depth range 0 - 161 m (Ref. 95072). Temperate
Eastern Pacific: Alaska to Mexico.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 8.5 cm WD male/unsexed; (Ref. 865)
It is found on rocks from the low intertidal to a depth of 10 meters (Ref. 865).
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.
Sept, J.D. 2008. (Ref. 94194)
IUCN Red List Status (Ref. 124695)
CITES status (Ref. 108899)
Threat to humans
| FishSource |
Estimates of some properties based on models
): 6 - 12.9, mean 9 (based on 118 cells).