blues
Registered
I'll second the Saros Bay option and yet strongly suggest traveling to the southern part of the country where water temperatures would be around 24 degree celsius. Fethiye, Bodrum and Kas have great diving sites. In Kas there is even an artificial underwater archeopark where you can dive to the replica of the Uluburun wreck. Other than that Ayvalik in the northern side of Izmir is also a good option where you can dive to red corals.