class
Sea Urchins, Sand Dollars, and Heart Urchins
Echinoidea
Field notes
Children
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Most observed native sea urchins, sand dollars, and heart urchins All
Native to the US, by observations.
-
Pacific Purple Sea Urchin
Strongylocentrotus purpuratus
20,153 observations
-
Eccentric Sand Dollar
Dendraster excentricus
11,832 observations
-
Indo-Pacific Rock-boring Urchin
Echinometra mathaei
6,637 observations
-
Red Sea Urchin
Mesocentrotus franciscanus
5,677 observations
-
Collector Urchin
Tripneustes gratilla
3,914 observations
-
Atlantic Long-spined Sea Urchin
Diadema antillarum
3,304 observations
-
Red Pencil Urchin
Heterocentrotus mamillatus
2,767 observations
-
Shingle Urchin
Colobocentrotus atratus
2,339 observations
-
Blue-black Urchin
Echinothrix diadema
1,003 observations
-
Black Starry Sea Urchin
Arbacia stellata
516 observations
-
Crowned Sea Urchin
Centrostephanus coronatus
423 observations
-
White Sea Urchin
Lytechinus pictus
294 observations
-
Ten-lined Urchin
Eucidaris metularia
205 observations
-
Heart Urchin
Lovenia cordiformis
76 observations
-
Indo-Pacific Long-spined Urchin
Diadema paucispinum
51 observations