Cover the affected area with vinegar once you get out of the water. Soak a lint-free towel in vinegar and hold it on there as long as possible.
The classification of a Sea Urchin is Echinoidea
sea urchin
A sea urchin does move, but not very frequently.
because the crab needs the sea urchin for protection and the sea urchin needs the crab for food
Ummm...it's the thing from which a sea urchin hatches?
I think a sea anenome and a sea urchin can live together because i have a little aquarium and there is a sea urchin and and a sea anenome (if that's how you spell it) living in there and they were perfectly fine. BUT if you have a sea urchin do not have any crabs in there, because my sea urchin killed one, and almost killed another one by taking its claw off. :(
a blue tuxedo sea urchin
It urges the sea to adapt to IT! The litle urchin urger.
Spines of the sea urchin can cause injuries of the skin.
A (street) urchin is a child who lives on the street, surviving by engaging in petty crimes. A (sea) urchin is a spiny creature (exoskeleton), with a soft interior. I welcome improvements to this answer.
yes, a sea urchin can kill you by its spikes. So be careful if you go swimming in the sea, make sure you bring goggles so you can look in the water if there is a sea urchin. If there is a sea urchin, make sure you don't bother it either get out of the water or if you want to continue your journey, step around or over it.-Elizabeth Helena