Sanibel and Captiva

On the southwest coast lies to barrier islands that, although filled with small hotels and big resorts, have minimal development and most land is given over to natural areas.

And it's great paddling, whether you like mangrove tunnels, the open ocean, or protected bays. Lots of backwater fishing too. Most trips are kid-friendly, but watch those tides. You can be left stranded in inches of water in some areas.

Here's a great site, with information on a variety of trips and outfitters in the area:

www.clubkayak.com/cfkt/trips/sanibel_island.html