- In Fri you will swim on the beach just below the settlement, but also at the beach of Emporios, a little farther.
- Do not miss the stunning beaches on the island Armathia, which you can visit by boat.
- In "Kato Gi", as locals call the north-western side of the island, you can swim in Antiperato, Fokiokamara, Ammoua, Katarti, Vrysi (near the airport), the old port, Kofteri, and Vlycha.
- The most remote beach on the island is Chelatros, in the southern part.
With its rich water bed, Kasos is an ideal place for diving and snorkelling. In 2003 it had hosted the world championship for underwater fishing.