<p><strong>Fig. 3.85.</strong>&nbsp;(<strong>B</strong>) Purple sea urchin (<em>Strongylocentrotus purpuratus</em>)</p>

Fig. 3.85. (B) Purple sea urchin (Strongylocentrotus purpuratus)

Image courtesy of National Oceanic and Atmospheric Administration (NOAA) Okeanos Explorer