The Guinness World Record for the longest open saltwater scuba dive in cold water is 11hrs 42 min, achieved by Declan Devane (Ireland) at Scubadive West Ireland on 10 October 2009.
The Guinness World Record for the longest open saltwater scuba dive in cold water is 11hrs 42 min, achieved by Declan Devane (Ireland) at Scubadive West Ireland on 10 October 2009.