Twenty Thousand Screams Under the Sea

Twenty Thousand Screams Under the Sea is the ninth episode of Scooby-Doo and Scrappy-Doo.

Premise
While in Mexico, the kids hear of Senor Valdez, a local fisherman, who found a Sea Beast in the water. Pretty soon the beast appears at a diving contest, and tries to scare everyone off.

Cast and Characters

 * Don Messick as Scooby-Doo and Scrappy-Doo
 * Casey Kasem as Shaggy Rogers
 * Heather North as Daphne Blake
 * Frank Welker as Fred Jones
 * Patricia Stevens as Velma Dinkley