Guardian Nature School Contact Blog Project Noah Facebook Project Noah Twitter

A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!
nature school apple icon

Nature School For Teachers - Fall 2020 Launch! visit nature school

Black sea Urchin

Arbacia lixula


Medium sized mainly black sea urchin. Hemispherical in shape, about 10 cm in diameter, without counting spines. Spines are all of the same size, reaching some 2,5 to 3 cm in length, rather uniform in color (black) and when in water, all standing erect, forming almost a ball of spines. The part around the mouth (bottom) naked.


Rocky coast of Adriatic sea, clean water.


These are my son's finds - he adores all sea creatures, and usually spends all of his holiday looking for them. Sea urchins are among his favorites; and after taking them (he is doing it rather expertly, I must admit) out, we take photos and put them back into water.

Species ID Suggestions

Sign in to suggest organism ID

No Comments

Zlatan Celebic
Spotted by
Zlatan Celebic

Dubrovnik, Croatia

Spotted on Jul 17, 2015
Submitted on Sep 11, 2015

Spotted for Mission

Related Spottings

Sea Urchin Black Sea Urchin Erizo Black Sea Urchin

Nearby Spottings

Caper Carpenter Bee Katydid or Bush cricket Hermann's tortoise


Noah Guardians
Noah Sponsors