The Greek Islands in an inflatable kayak

Some photos of kayaking from Fethiye to Kekova in a kayak

Kayaking over the Sunken City of Kekova is one way to discover the underwater city.  You can get  much closer than a cruise boat.

There’s a great map on this page:

Think about this: take your inflatable kayak onto the plane where it can sit in the overhead bin while you fly to Greece.  When you reach your destination, inflate your kayak and enjoy the blue-green waters.