Glaucus: Divers' underwater living experiment

Back in 1965 two divers experimented with living underwater at the bottom of Plymouth Sound off the south west coast of England.

Inspired by Jacques Cousteau's underwater adventures, Colin Irwin and John Heath created an undersea habitat in which they lived for seven days in a metal cylinder called Glaucus.

In September 1965 the underwater 'house' was plunged down into Plymouth Sound with the two aquanauts inside to prove that the 'pod' could support human life beneath the waves.

The divers returned to the surface after seven days under the sea in perfect health. Their underwater house had been a success.

Fifty years on, BBC Inside Out met one of the divers, Colin Irwin, as he ventured beneath the waves of Plymouth Sound one more time, to be reunited with what remains of Glaucus.

Credits: Archive footage is courtesy and copyright of British Pathe.

Inside Out South West is on BBC One on Monday, 7 September at 19:30 BST and nationwide on the iPlayer for 30 days thereafter.