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  1. Life
  2. Animals
  3. Echinoderms
  4. Sea Urchins, Sand Dollars, and Heart Urchins
  5. Sea Urchins
  6. Irregular Sea Urchins

infraclass

Irregular Sea Urchins

Irregularia

Includes
16 native 10 present
Where
In the US
Source
iNaturalist

Field notes

Children

  • Neognathostomata 8 native
  • Atelostomata 8 native

Range

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided

Most observed native irregular sea urchins All

Native to the US, by observations.

  • Eccentric Sand Dollar Dendraster excentricus 11,832 observations
  • Heart Urchin Lovenia cordiformis 76 observations

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