The Kuroshio Sea
You can find this enormous fish tank in the Japanese Okinawa Churaumi Aquarium. It is know as the Kuroshio Sea and it’s the second largest fishtank in the world. Although its name might be hard to pronounce, the tank itself is extremely spectacular. It holds a staggering 7,500 tonnes of water, that’s roughly the equivalent of three Olympic-sized swimming pools.



The Whale Shark
Eighty species call the tank their home, including yellow-fin tuna, bonito, that’s a type of large mackerel, and manta rays. But the main attraction and the daddy of them all is the world's biggest fish, the whale shark  -  which can grow to be 12 metres long and needs a quarter of a tonne of food every week. Only three aquariums in the world have tanks large enough to house these giant sharks. In the Sea Tank they want to let the creatures live their life as they would in the ocean, as natural as possible. All the species can be found around Okinawa, and even the water itself is pumped in from 300 metres offshore.

Huge Viewing window
To get a good look at all the fish, you would need a pretty big viewing window. And they have one…It is the largest viewing window in the world and measures 8.2 by 22,5 metres and is more than 60 centimeters thick. If they didn’t have that the tank would collapse under the huge water pressure on the glass.

It was constructed from seven acrylic sheets, which were stuck together using a special glue with a secret formula.
The window is so clear that each year millions of visitors can believe, for a moment that they have stepped into a magical underwater world. We believe them, looking at this video…but is it possible or are we being tricked? We don’t really care, it’s very peaceful to look at.

Also take a look at Attuworld