This is one of the world’s biggest fish tanks – so big that it’s even been named the Kuroshio Sea.

Located in the Churaumi Aquarium in Okinawa, Japan, the enormous tank is some ten metres deep, 35 metres wide and 27 metres long.

It holds a staggering 7,500 tonnes of water – roughly equal to three Olympic-sized swimming pools.

Eighty species live in the Kuroshio Sea tank, including yellow-fin tuna, bonito (a type of large mackerel) and manta rays.

But 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 creatures.

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