Strongylocentrotus

Strongylocentrotus is a genus of sea urchins in the family Strongylocentrotidae containing several species.

==Species== The World Register of Marine Species includes: {| class="wikitable" |- ! Image !! Scientific name !! Common name!! Distribution |- | || Strongylocentrotus djakonovi Baranova, 1957 || || Bering Sea |- |120px || Strongylocentrotus droebachiensis (Müller, 1776) || green sea urchin || the Pacific and Atlantic Oceans to a northerly latitude of 81 degrees and as far south as the Puget Sound (Washington State) and England |- |120px || Strongylocentrotus fragilis Jackson, 1912 || || |- |120px || Strongylocentrotus intermedius (Agassiz, 1863)|| || Sea of Japan, Pacific Ocean |- |120px || Strongylocentrotus pallidus (Sars, 1871)|| || Norway, off Russia from the Barents Sea down to the central part of the Sea of Japan |- | || Strongylocentrotus polyacanthus Agassiz and H. L. Clark, 1907 || || off Simushir Island |- | || Strongylocentrotus pulchellus Agassiz & H.L. Clark, 1907 || || Gulf of Jantary, SW coast of Sachalin |- |120px || Strongylocentrotus purpuratus (Stimpson, 1857) ||purple sea urchin || Pacific Ocean extending from Ensenada, Mexico to British Columbia, Canada. |- |}