Off the coast of Villasimius there emerges Isola dei Cavoli to the southeast of Capo Carbonara, and Serpentara to the east of Punta Molentis: these two islands are part of a protected marine area, the Parco Geomarino di Capo Carbonara. The Isola dei Cavoli, which boasts a rich marine life, is also a nesting place for Peregrine falcons and Cory's shearwaters. Serpentara is made up of a landscape of rocks and coral reefs, which form natural pools. Boat trips and guided tours of the park are organised.