Enjoy a fix of vitamin D at Playa de Las Minas. After you've worked on your tan, hang around and watch the sky burst into different colors as the sun sets.
You'll find this stretch of coastline in Mazarron. Once you've done everything you want to at Playa de Las Minas, have a look at nearby Bolnuevo Beach, Playa de Calnegre, and Playa de Puntas de Calnegre.