We took the Jungle Tour with King David Tours to Stone Island . It was a lot of fun. Sometimes you find sand dollars here, too. If you just want to relax, they have a shaded area, too. And all the beer, water, and soda pop you can drink is included.
Lunch is back near the dock, and is wonderful.
They first give you a ceviche tostada. Most people wouldn't eat ceviche if they knew what it was, unfortunately. They also serve barbecued fish with the best refried beans in Mexico, or if you are not a fish lover, cheese quesadillas. Another tour we like is the country tour. We've gone with Vista Tours to that one.