Item title reads - Week under water.

Two aquanauts spend a week under water in sealed capsule. Plymouth, Devon.

M/S's of the two-ton cylinder "Glaucus Project" about to be lowered into the Plymouth breakwater. C/U as cylinder is lowered into water. M/S crane operator watching. M/S cylinder almost submerged in water. L/S crowds on quayside watching. M/S's tug towing out the cylinder to the breakwater. C/U Colin Irwin having diving gear adjusted. C/U Colin putting on goggles. M/S and C/U of the cylinder being lowered out in the bay. C/U marker buoy being put in position on the water.

M/S cylinder completely submerged. M/S of Colin and his fellow diver John Heath. Various shots as they dive off the side and swim towards the marker buoy. M/S crowds waving from quayside. Various shots as they dive under water. Interior M/S of the sealed cylinder. M/S Colin Irwin being helped up into the cylinder, he sits down and starts to take his gear off. M/S John phoning up to people on surface. C/U John on phone. Various shots of man at base talking to him. Various shots as the two men check equipment in the capsule.