Originally, it was a bay opening into the Mediterranean; at either end, volcanic reefs gradually held back the sand and sediment that was dragged along by the sea currents to form a sandy column of dunes and rock vegetation and long beaches in contact with two seas.
La Manga sandbar is cut off by natural channels that keep the two seas in contact with each other; the so-called golas allow water from the Mediterranean into the lake.
The Mar Menor with its 5 islands and having shallow and protected waters, lends itself to being an International waterbased Sports Station.
There are sailing and skiing schools that run periodical courses, as well as windsurfing and catamarans, and canoeing.
The 2011, 2012, and 2013 Copa del Sol tournaments were also held partly at the stadium, as well as many of the 2000–01 Nordic Football Championship matches.