Scuba Diving Costa Rica. One of the many natural attractions that Costa Rica offers its visitors is scuba diving. And one of the key areas for this kind of activity is the Catalina Islands, where unique rock formations resulting from volcanic activity provide diving lovers with the chance to admire a myriad of sea-life species present at this site — including manta rays, white-fin and bull sharks, barracudas, sea turtles, starfish, and many more. Catalina Islands is located 15-20 minutes in boat from Flamingo Beach in Guanacaste. Experts agree that the best time to enjoy the close to 20 diving...