The Deep is a large underwater aquarium situated at Sammy's Point, at the confluence of the Hull and Humber rivers in Hull, England.
Billed as "the world's only submarium," the tank contains thousands of sea creatures (including seven species of shark), 2.5 million litres of water and 87 tonnes of salt housed in an iconic structure built as part of the UK National Lottery's Millennium Commission project.
As well as a tourist attraction, The Deep is a centre for marine research.
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