Assertion: purple sea urchin | /r/HasProperty | strongylocentrotus purpuratus
Facets:
Source sentences:
text: " Purple sea urchins (Strongylocentrotus purpuratus) off the coast of California.
text: Purple sea urchin (Strongylocentrotus purpuratus).
text: To investigate that possibility, Johnsen and his colleagues experimented with California purple sea urchins (Strongylocentrotus purpuratus), testing how 39 specimens placed in a brightly lit 4-foot-wide (1.2 m) arena responded to a black disc on the wall.
text: The purple sea urchin, Strongylocentrotus purpuratus, lives along the eastern edge of the Pacific Ocean extending from Ensenada, Mexico, to British Columbia, Canada.