The Golden Dolphin - S3.E8

Corky, Jo-Jo, Casey and All-Star rescue a dolphin that is in trouble. An evil captain is looking for him and tries to catch him as the Snorks help him get to the reef. Jo-Jo calls some whales to help him out, but he is caught anyway. The Snorks go on the boat and they are pursued by the captain. Corky frees the dolphin and makes the captain sink his ship.