The Regional Park of Las Salinas y Arenales de San Pedro del Pinatar extends north of Lo Pagán, protecting a network of salt ponds, dunes, and lagoon shores that support exceptional birdlife. This is one of the most important wetland sites for migratory birds on Spain's Mediterranean coast, serving as a refuelling stop on the Atlantic-Mediterranean flyway.
Flamingos are the signature species, present year-round but most numerous in winter and spring. Avocets, spoonbills, herons, and a huge variety of waders also pass through. The reserve has well-marked walking paths along the salt pond edges and a visitor centre at El Mojón, just north of Lo Pagán. Early mornings and evenings are best for bird numbers and light.