Snorkelling with the sharks at SEA LIFE London Aquarium with a prescription diving mask from Boots Opticians.-review on August 10, 2015 Boots Opticians days out in london +3 family days out prescription diving mask prescription swimming goggles SEA LIFE London Aquarium snorkelling with sharks Boots Opticians days out in london family days out prescription diving mask prescription swimming goggles SEA LIFE London Aquarium snorkelling with sharks