Beach users are not able to bath in the sea at Praia dos Pescadores until analysis of the waters proves that it is safe to do so.

In a statement, the National Maritime Authority (AMN) said that "the presence of brown coloured water with an intense odour on the beach was confirmed, leading to the raising of the red flag", which prohibits bathing in the sea.

According to AMN, the beach will remain off-limits to bathing until the results of water quality analysis, carried out by the Portuguese Environment Agency (APA), are released.

"The alert was received at 18:00 (19 July), by a lifeguard, informing us that under the jetty, water with a brownish colour was coming out, presenting an intense odour leading to the Maritime Police of Albufeira attending the scene immediately”, state the authorities.