La Torre del Sumidero, Ciutadella de Menorca, Spain

About 15 minutes from the port of Ciutadella de Menorca, sailing south, in front of the cliff of Cala Blanca, we can make a dive that is especially suitable to make us aware of the interaction of man with the marine environment. A water catchment tower has been built for a desalination plant at a depth of 18 metres.