Turkey is a peninsula and it is surrounded with sea from 3 sides. You can think of Turkey at the center of the World. Because, Its western neighbours are Europen countries and its eastern neighbours are Asian countries. On the south beyond the Mediterranin sea there is Africa continent. On the North, beyond the blacksea, you can see the Russia on the map.
There are lots of beautiful coasts and beaches in Turkey. For every season you can swim on mediterranian coasts.
There are also very beautiful beaches that you can swim in only summer along the blacksea region. Amasra, Cide, Akçakoca are among the major places. The Eagean region that’s neighbour to Greece islands are very beautiful and you can swim on this beaches in spring, fall and definately n summer.