Crab Island Excursions & Eco-Dolphin Cruises - The SunVenture I is custom built 45-ft. catamaran located on the Destin harbor. Enjoy a narrated educational Eco-Dolphin Cruise that explores the beautiful Emerald Coast waters and its abundant sea life. Experience an extraordinary excursion to the world famous Crab Island! Snorkel...swim...relax in the areas most pristine waters. And most importantly LET OUR CAPTAIN DO THE DRIVING!