Zoo Tycoon: Marine Mania is a 2002 expansion pack for Zoo Tycoon, developed by Blue Fang Games for PC and Mac. It extends the base game by introducing aquatic animals — including the great white shark and giant squid — alongside new exhibit types that can function as standalone underwater habitats or be merged with existing land enclosures. Players can outfit these exhibits with more than 20 species of underwater organisms such as kelp and sea anemone, animal toys, and sunken treasure decorations. Guest attractions include a shark tunnel and a dolphin ride, while customizable aquatic shows — among them a dolphin show — add another management layer. Interactive tutorials and in-game marine specialists assist with maintaining animal welfare, and 10 new scenarios challenge players to build and sustain a thriving zoo. The expansion integrates directly with the base game, making its content immediately accessible upon installation.
