Vathis is a seaside village on the east side of Kalymnos. It is 11 km from Pothia and is built in a green fertile
valley where mandarins and oranges are grown. This valley ends in a deep bay where the small picturesque port of Vathi, Rina, is located, which is a safe anchorage for the reception and service of tourist yachts. There is also a small boat yard. Sights of the area are the natural aquarium, next to the port of Rina, trekking and hiking trails in the surrounding area and the prehistoric cave "Daskalio" at the entrance of the port of Rina.