There are lots of trips, one that may interest you though...
All the River Taxis to Fethiye leave from the bridge. If you go down one day & find boat no. 17, ask for a lady called Sera (pronounced 'Sarah') and ask to book it for the next day, or another day, they do a great trip. You get the boat to yourself, and they basically ask "Ok, where can we take you?" - we went right round Fethiye bay, out to an uninhabited Island where Sera's husband lept off, made a barbeque out of the rocks on the beach & cooked Garlic Bread & Shish Kebabs!! We went for a swim & on returning the table was set with about 9 different plates of salad, pasta, and the like. On the way back I asked if they could head straight into the Calis seafront, so I could take some photo's from the sea for the website (there are only about 4 pictures of Calis seafront on the internet!) Off he went, my twin girls took the wheel for a bit (not bad for two years old!!) and I got some great pictures - it's not something you can get on the normal boat trips.
I think you could get it for around £45 for the day, for the boat, we had 6 of us so £7.50 each?, that's including lunch (drinks extra) - if you decide to do this, here's a tip, take a pack of Earl Grey tea in your luggage with you for Sera, it's her favourite & so expensive in Turkey. Tell her Keith said she liked it and give her it before negotiating the price for the trip!
8.30pm is the best time to catch them & arrange a day.
You won't find that excursion in the trip shops!
Scunner