http://rfbolland.com/okislugs/elysthom.html
http://www.seaslugforum.net/showall/elysthom
http://www.nudipixel.net/species/elysia_thompsoni/
http://sacoglossa.lifedesks.org/pages/34283
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=501