Zoo Tycoon 2: Marine Mania Expansion - PC Zoo Tycoon 2 Marine Mania Expansion Pack Video Game for PC General Features: Care for fun new animals Chorograph amazing aquatic shows to thrill your guests 20 marine animals Beautiful exhibit tanks and habitats Thrilling water tricks and shows New aquatic biomes Marine-themed buildings and scenery Splashy new scenarios and challenges ESRB rated E for everyone (10+)