An organised trip combining Myra/Demre/Kekova and Kale using coach and boat.
Boats sail from Kas - - takes a while though and thus probably less time in Kale but more time at sea if that's what you prefer.
Boats from Kalkan take even longer and not recommended.
Take a Dolmus to Üçagiz (Teimiussa) the harbour hamlet where you can take a boat to Kekova and Kale (apparently expensive extra if not on a trip). Üçagiz (pronounced EWCH-ah-uhz) means "Three Mouths" for the three rivers that flow from here.
With more time we would have taken a dolmus to Üçagiz, via a twisty 19km stretch of road from the main highway,to spent more time, rather than just walk to and from the boat. Its quite a quaint hamlet with the fishing boats in front of little fish restaurants and tree house tavernas. Just a few quaint streets but a lovely place for lunch and to browse the little market stalls with its colourful bead jewellery. Perhaps a another trip to this part of Turkey still beckons.....
To get to Kekova you need to rent a boat.
There are a number of boat companies that will take you there at reasonable prices, but in my opinion the best option is to ask a local fisherman to take you to Kekova.
It certainly is more interesting and more over you'll be alone with him and have enough time to enjoy the ride.
We did so and a fisherman brought us around Kekova and showed us the most interesting parts. His boat also had a glass bottom so we've been able to see more of the ruins of the Sunken city located under the water.
In 2001 we paid around USD 15-, which is a good price for a wonderful trip.