A study has shown for the first time that starfish use primitive eyes at the tip of their arms to visually navigate their environment. - Photo credit: lowjumpingfrog - http://earthsky.org/science-wire/starfish-have-eyes-at-the-tips-of-their-arms?utm_source=EarthSky+News_campaign=5d7b00b820-EarthSky_News_medium=email_term=0_c643945d79-5d7b00b820-393623081