Jonas Brothers are Beach Boys

The Jonas Brothers shoot scenes for an upcoming episode of JONAS along the beach on Friday (April 23) in San Pedro, Calif.

During one scene, Kevin, Joe, and Nick carried around a giant surfboard with a guitar print on it.

The trio played their instruments on the beach and were seen fooling around on set. Nick looked HOT in his blank tank top — but not while blowing his nose. Joe pretended to be Kate Winslet from Titantic with his outstretched arms. And Kevin got silly with the surfboard, of course!

15+ pictures inside of beach boys Jonas Brothers…