It is Discovery Cove and you can have up to a 30 min dolphin encounter. Another one is at sea world they have a dolphin cove where you can pet the dolphins. And at Epcot they have a 1 hour experience to swim with the dolphins at the Living Seas, its Dolphins in Depth and you get a t-shirt and picture with one of the dolphins you interact with to rememeber you experiance. I think it might be longer than an hour. Go to the disney web site and run a search. It'll tell you the length and the price of the experiance.