Patmos is located in the middle of what we call "the East Aegean Polynesian" and your friend will have the opportunity to "discover" a group of small picturesque islands within a range of 8-10 n.miles around Patmos, especially if he has an inflatable boat with him. I will try to send you some photos. However it could take me a couple of days or three to find out where these photographs are stored in my records...