One of the best things you can do in Barbados is a catamaran excursion. There are several companies that offer them. You spend all day enjoying the sea. You can see shipwrecks and eat at the catamaran. There are salads, pasta, or fish (I recommend the Flying Fish, it´s delicious) and dessert is included.The best part is swimming with the turtles. It isn´t super cheap but it´s worth it.