Surf Ninjas (1993)
Surf Ninjas is a 1993 American comedic family film involving martial arts, directed by Neal Israel and written by Dan Gordon. The film stars Ernie Reyes Jr., Rob Schneider, Nicolas Cowan, and Leslie Nielsen. Surf Ninjas follows two teenage surfers from Los Angeles who discover that they are crown princes of the Asian kingdom Patusan and reluctantly follow their destinies to dethrone an evil colonel that rules over the kingdom.
More at Wikipedia.