The longest scuba submergence on one cylinder is 8 hr 20 min 38 sec by Jacobus Jacobs (South Africa) at All About Scuba, Rustenburg, South Africa, on 27 January 2007.
One 12 litre scuba cylinder was used for this attempt.
The longest scuba submergence on one cylinder is 8 hr 20 min 38 sec by Jacobus Jacobs (South Africa) at All About Scuba, Rustenburg, South Africa, on 27 January 2007.
One 12 litre scuba cylinder was used for this attempt.