The Deep is a large underwater aquarium situated at Sammy's Point, at the confluence of The River
Hull and the Humber estuary in Hull, England
. It opened in March 2002.
Billed as 'the World
's only submarium', the tanks contain thousands of sea creatures (including seven species of shark), 2,500,000 litres (550,000 imp gal; 660,000 US gal) of water and 87 tonnes (96 tons) of salt housed in an iconic structure designed by Sir Terry Farrell and built as part of the UK National Lottery's Millennium Commission project.