water hazards: many of brazil's beaches have very dangerous riptides, even if the water looks safe. ocean currents and waves are unpredictable, even in popular beaches frequented by tourists. shark attacks are reported in the waters of some beaches in northeastern brazil, particularly near recife. always observe posted warnings and never swim while under the influence of alcohol. follow local authorities? guidance and refrain from swimming alone in areas marked with red warning signs or at beaches where there are no municipal lifeguards or first responder services.
