The programme will be the fourth and final phase of works completed at the aquarium, with over £4 million already spent since 2011.
The Aquarium was built 1869-1872, and was designed and engineered by Eugenius Birch, the designer of the West Pier in Brighton. The building has been utilised in a number of ways over the years; playing host to a car museum; a ballroom; displaying a wide range of animals including penguins, chimpanzees and bears; while there was even a mini golf course on the roof at one point.
Many locals may remember the Aquarium contained a Dolphinarium from 1968, but Misty and her friends were released back to the wild when Sea Life took over in 1991.
Max Leviston, General Manager at the aquarium, said: “Being the oldest operating aquarium in the world, with Grade II listed heritage, we have a responsibility to the building and the safety of our visitors, staff and creatures to ensure structural integrity is maintained.
“The works are also being completed to accommodate the Soho House development.”
The ocean tunnel and display will be closed to the public from 3rd September and will reopen in spring 2019.
Max continues: “Although a small part of the attraction will be closed during this time, we will still have 55 displays and 3,500 amazing creatures including jellyfish, rays and seahorses to name but a few. Visitors will be truly amazed when they return to see what we’ve done to transform the ocean display next spring.”