Photo 4075180, (c) Grace Shen, some rights reserved (CC BY-NC), uploaded by Grace Shen

Attribution © Grace Shen some rights reserved Uploaded by graceshen Source iNaturalist Associated observations Photos / Sounds 2 photos What Arctic Green Sea Urchin (Strongylocentrotus droebachiensis) Observer graceshen Date June 22, 2016 06:59 AM EDT Place Gulf of Maine, Kittery, ME, US (Google, OSM) Date Added June 22, 2016 12:28 PM EDT 2 IDs Research Grade View Sizes small medium large original