This weekend, Sean Penn took to the beach in Malibu, showing off his fit physic and his fetching new lady, Stacey Koplin.

Bauer-Griffin snapped photos of the new pair walking along the surf together. Penn and Koplin looked relaxed and comfortable on the sandy shore. Penn later showed off a very toned chest and the two ended the day with a jet-ski ride.

For more photos of Penn and Koplin's beachside stroll, click over to Bauer-Griffin