Patty Schilling fed the seals while Morgan and Kenedi DePril observed. The program is one of a growing number at aquariums and animal parks around the country. At Gatorland in Orlando, Fla., you can help the trainers move the reptiles from one pool to another. At SeaWorld in San Diego you can brush an orca's teeth. At Chicago's Shedd Aquarium, which added a program just over a year ago, you can sit in on a beluga whale training session.