This tiny urchin was a striking bright orange color
We have a lot of purplish reddish urchins around here.
Is this a red sea urchin? I can't decide whether these guys are red or purple urchins. Green urchins are far more common here than anything else, but we get some of these as well. They love to hide out in deep tidepools and deep cracks in our one limestone beach.
Field Notes - Both were dead. The one with spikes had just died and the bottom of the shell was cracked open and chipped away at. This one still reacted to stimuli of the spines for about an hour
This sea urchin was more in the open than that of the purple sea urchin, and also was stationery.
This sea urchin had a very distinct shade of purple which was eye catching. The urchin was in between two rocks and was probably looking for food, the urchin didn't move at all.
Juvenile - did not see any adults.
Purple Sea Urchin (Strongylocentrotus purpuratus)