Green Sea Urchin

Green Sea Urchin

Author:  Martina Sarra Video and photos by Lucinda Booth and D. Young Scientific Name:  Strongylocentrotus droebachiensis Size Range:the average adult size is 50 mm (2 in), but it has been recorded at a diameter of 87 mm (3.4 in).  Of the three species of sea urchin...