Boat Rentals on Sanibel Island are a great way to explore the beauty of the waters around Sanibel, Captiva and Fort Myers without the hassle of bringing your boat with you to Sanibel. Below is a list of boat rental agencies on Sanibel, Captiva and Fort Myers to help you explore the waters around Sanibel, Captiva, Boca Grande and even Cayo Costa State Park!