If you're feeling adventurous, try a spot of scuba diving in the Fethiye area.  Good Turkish guides are the ideal people to make your diving a day to remember.  The visibility of the water, in the shallow places and at depth, is really good and the temperatures are good too.  Good schools to dive with are Mermaid Diving Club , European Diving or Elite Diving Centre, but there are quite a few dive schools in the area.  European dive boats are a good size and are run very efficiently with mostly Turkish crews and international dive masters and instructors.  No matter which company you decide to dive with, the experiance will far outweigh the cost, which is roughly between £30 to £45 for the full day.  This includes pickups, lunch and 2 to 3 dives.

From the very beginner, to the very experienced, it is to be sure you will enjoy your day out on a dive boat. If it's your first time, don't let the sight of all the equipment and experienced divers put you off, because you must remember, everyone was like you at one time.  Enjoy your diving and then relax at the end of the day with a few beers talking about the great experience you have just had.