Microsoft Game Studios just let us know that they have launched the official Zoo Tycoon: Marine Mania. The new site has some new audio, a trial version of Zoo Tycoon and a slew of screenshots. "The Zoo Tycoon: Marine Mania expansion pack seamlessly integrates with Zoo Tycoon, allowing players to immediately add aquatic creatures to their ultimate zoos. In addition to offering new creatures ranging from the great white shark to the giant squid, Zoo Tycoon: Marine Mania allows players to enhance their zoos with customizable aquatic shows including a dolphin show.