The New Scooby and Scrappy-Doo Show - Season 1 Episode 2
No Sharking Zone

The kids head to the island of Scareruba, to see Prince Ruba, and take pictures of the surfing festival and legendary surfer Cowabunga Carlyle. But while there, they hear of the lost treasure of Scareruba and the great white shark and seaweed monster who are protecting it.