San Javier is a small town and municipality in the autonomous community and province of Murcia in southeastern Spain. The municipality is situated at the northern end of Murcia's Mediterranean coastline, the Costa Cálida.

Mar Menor is a coastal saltwater lagoon in the Iberian Peninsula located south-east of the Autonomous Community of Murcia, Spain, near Cartagena. Its name is the opposite of the Mediterranean, which is the Mar Mayor of the region.