Echinoidea | Clypeasteroida
Harms, J. 1993. (Ref. 2711)
Size / Weight / Age
Max length : 1.5 cm BL male/unsexed; (Ref. 7882)
Benthic; depth range 0 - 1250 m (Ref. 85345)
Climate / Range
Atlantic and the Mediterranean Sea: Belgium and Germany. Temperate and subtropical.
Oval, flattened body measuring up to 1.5 cm long for species from the North Sea off Belgium (Ref. 7882). Found along the near-coastal and coastal zones usually in medium- to coarse-grained sand with low mud content (maximum of 10%). Turns completely green in color when injured (Ref. 7882). 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 (Ref. 833).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimation of some characteristics with mathematical models