Pax, eight, and six-year-old Maddox – the oldest two sons of Angelina Jolie and Brad Pitt - raced into the surf in Malibu, boogie boards at the ready.
The boys played contentedly in the sea, catching waves and throwing balls of sand out into the ocean.
Meanwhile, back on dry land the grown-ups attended a private party.
Onlookers said Brad was particularly attentive to his partner of five-years, putting his arm on Angie's wrist, rubbing her back and resting his hand on her shoulder.
Angelina, wearing an Indiana Jones-style Fedora hat to shade her face from the sun, looked happy to be making the most of her free time after wrapping up shooting The Tourist in Venice with Johnny Depp.