La Sirena Beach, Naturist beach near Aguas Dulces, Uruguay.

La Sirena Beach is a wide, clothing-optional naturist beach of fine sand on the Atlantic Ocean about 2.5 km north of Aguas Dulces in Rocha Department, Uruguay. It is backed by sand dunes covered in psammophile vegetation, with small wetlands, ponds and acacia trees. Access is on foot from the end of Cachimba y Faroles street, along the beach or through the dunes to the signposts.

La Sirena was authorized as a naturist beach by the Rocha departmental authorities and opened as such in 2012, making it Uruguay's second naturist beach after Chihuahua Beach in Maldonado Department. Clothing remains optional there, and the authorization came with rules on personal space, staring and photography.

La Sirena is a clothing-optional beach: nudity is permitted but not required, and the departmental rules ask visitors to keep their distance from others, avoid staring, and take no photos or videos without consent. It is Uruguay's second naturist beach, after Chihuahua in Maldonado Department.

Access is on foot from the end of Cachimba y Faroles street in Aguas Dulces, walking north along the beach or over the dunes about 2.5 km to the sign posts. There is no lifeguard service and no tourist infrastructure, so bring food and water; lodging and meals are in Aguas Dulces. Tourist inquiries are handled at the Rocha government office at Route 16 and Cachimba y Flores street.

La Sirena is Uruguay's second naturist beach, after Chihuahua in Maldonado Department, and it opened as such in 2012. It is clothing-optional: nudity is permitted but not required. Specific rules ask visitors to respect others' personal space, avoid staring, and not photograph or film anyone without consent.