As of 2026, the undisputed "biggest" and most intense ride at SeaWorld San Diego is Emperor, which holds the record as California's tallest, fastest, and longest dive coaster. This penguin-inspired thrill ride features a terrifying 153-foot vertical drop at a 90-degree angle, sending riders hurtling at speeds of up to 60 miles per hour. What makes it unique is that it is a floorless coaster, meaning your feet dangle above the track as you soar through barrel rolls and a massive Immelmann loop. For those who measure "biggest" by intensity and technical stats, Emperor is the clear winner. However, the park also features Electric Eel, which is a multi-launch coaster that reaches 62 mph and features a "heartline roll" at 150 feet, and Manta, a family-friendly launch coaster that emphasizes high-speed twists and turns rather than massive drops. Emperor remains the park's premier "shriek-inducing" attraction, designed specifically for those who want the maximum adrenaline rush allowed by modern coaster engineering.