title: Green sea urchin
text: # Green sea urchin
  
  Several species of sea urchin share the name green sea urchin:
  
  * Lytechinus variegatus, also known as the variegated sea urchin
  * Psammechinus microtuberculatus, occurs in the Atlantic Ocean, Adriatic Sea, Aegean Sea and Mediterranean
  * Psammechinus miliaris, also known as the shore sea urchin
  * Strongylocentrotus droebachiensis, common in northern waters all around the world
  