Wax up the board and get stoked as Scooby and his pals Shaggy Daphne Fred and Velma (voiced by Casey Kasem Tia Carrere Mario Lopez and Teri Garr) head to Hawaii for a big surfing contest -- which ends abruptly when a nearby volcano rumbles and a star surfer disappears. Before the volcano flips its lid Scooby and the gang snorkel paraglide and surf their buns off while investigating the mysterious appearance of "Wiki-Tiki".