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Project Noah Nature School
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.
Spotted on Jul 17, 2015
Submitted on Sep 11, 2015
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