Enjoy a fix of vitamin D at Les Salines. Once you've worked on your tan, hang around and watch the sky burst into different colors as the sun fades away.
Wandering around this stretch of coastline won't cost a thing, which is just what you want if you're after free things to do. You'll find Les Salines in Martinique. There are loads more attractions to enjoy in the vicinity, including Pointe Marin Beach, Cap Chevalier and Gros Raisin Beach.