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 a building designed by Sir Terry Farrell and built as part of the UK National Lottery's Millennium Commission project.
The Deep is also a centre for marine research. Staff marine biologists look after the animals in The Deep’s collection as well as carrying out research into the marine environment.
The Deep is a charitable public aquarium dedicated to increasing peoples enjoyment and understanding of the world’s oceans. It is one of the most successful millennium projects in the Country.