Centered on its namesake waterway, the Mission Bay neighborhood is more than 50% water and known for SeaWorld, which has rides, aquariums, and animal shows. A huge manmade water sports zone, popular for sailing and kitesurfing, occupies the western bay. Stand-up paddleboarders ply the calm waters off Fiesta Island, a peninsular park with a long beach. To the north, salt marsh preserves attract wading birds.