Hiroshima, Japan
Featuring six tanks as well as a pond, the Mariho Aquarium is one of the city's newest attractions, home to vibrant jellyfish, spotted eels, octopuses and more. The aquarium's elaborately-designed tanks feature an array of local residents and features that have been deliberately designed to teach visitors about Hiroshima, such as: Char, natives of Hiroshima's mountain streams, as well as Sardines & Octopuses from the nearby Seto Inland Sea.