Things get a little wonky on a few of the more elite private beaches in Malibu: Broad Beach and Carbon Beach, among others. On these beaches, erosion has basically eliminated 50% of the beachfront, such that the entire public strip is underwater at mid to high tide. It's exposed only at low tide. Hence, the beaches are de facto private for much of the day. This isn't intentional; it's just the result of environmental changes over the last few decades.