Samos Limnionas Underwater Tunnel is a beautiful dive site with large rock formations, lots of marine life and a short underwater tunnel. It's a dive site for both experienced and inexperienced divers. The site is also used as a training site and freedivers and snorkelers enjoy coming here as well. Between the rocks you'll find numerous species including octopuses and moray eels. More experienced divers descend along the wall to a depth of 40 meters.