Paracentrotus lividus

… is the egg mass of Paracentrotus lividus (the best known rock borer) and other Paracentrotus species; and, on the U.S. Pacific coast, the eggs of the giant purple (or red) urchin (Strongylocentrotus franciscanus) are similarly considered a delicacy. The slightly smaller S. purpuratus, of the same region, is known to…