Sea urchinsThis entry was posted in Invertebrates on March 18, 2016 by Toby Gibson (updated 747 days ago) Edible sea urchin (Echinus esculentus) in the Farne Islands, UK. September. Edible sea urchin (Echinus esculentus) in the Farne Islands, UK. September. Share this:ShareClick to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Google+ (Opens in new window)