With summer coming, please be aware of beach safety, and particularly of the flags that fly on the beaches. The following graphic explains the six you will encounter:. The green means bathing is allowed, yellow means bathing is allowed but that conditions are difficult and so the utmost care should be taken, and red means that bathing is prohibited because of the sea or other conditions. On the bottom row, there is the blue flag for the best beaches, the “medusas” one warns of the presence of jellyfish, and the black means that the beach itself is closed to the public. Please do also see THIS page for further information on water safety, particularly cold water shock and undertow.