Dangerous rip currents, as well as elevated surf of up to six feet, could strike beaches in Los Angeles and Ventura counties, with the highest risk on south-facing shores, especially from Point Mugu to Malibu, the National Weather Service said in a beach hazards statement, which remains in effect through Monday evening. Swimmers can be pulled out to sea by the currents, and the Weather Service is advising beachgoers to stay near lifeguard towers or avoid the water altogether.