Eucidaris thouarsii

Cidaridae
Slate Pencil Urchin, Slate Pencil Urchin
  • Eucidaris thouarsii, Machalilla, Ecuador, Photo: Graham Edgar
    Eucidaris thouarsii, Machalilla, Ecuador, Photo: Graham Edgar
  • Eucidaris thouarsii, Gulf of California, Mexico, Photo: Rick Stuart-Smith
    Eucidaris thouarsii, Gulf of California, Mexico, Photo: Rick Stuart-Smith
Distribution
Tropical Eastern Pacific
Description
Spines think and blunt, often encrusted. Usually found between or under rocks.
Information
  • Max Size: 16 cm
  • Sea Temperature Range: 15.9-30.3°C
  • Depth: 0-150m
  • Habitat: Coral Reef, Rocky Reef
Rarity
  • 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.
Edit by: Joe Shields
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