Eucidaris thouarsii, Machalilla, Ecuador, Photo: Graham Edgar
Eucidaris thouarsii, Gulf of California, Mexico, Photo: Rick Stuart-Smith
Tropical Eastern Pacific
Spines think and blunt, often encrusted. Usually found between or under rocks.
Max Size: 16 cm
Sea Temperature Range: 15.9-30.3°C
Habitat: Coral Reef, Rocky Reef
IUCN Threat Status: Not Evaluated
Occurrence: Common (30% of sites)
Occurrence describes how often the species is found on surveys within its distribution.
It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
Abundance: Many (17 per transect)
Abundance is calculated as the average number of individuals recorded per RLS transect, where present.