Green Sea Urchin (<i>Psammechinus miliaris</i>)
<a rel="nofollow" class="external text" href="https://www.inaturalist.org/users/1891727">Donald Davesne</a>
CC BY 4.0
<a rel="nofollow" class="external free" href="https://www.inaturalist.org/photos/159045081">https://www.inaturalist.org/photos/159045081</a>