- Cem Karabay
- 192/19/19 hour(s):minute(s):second(s)
- Turkey (Istanbul,Cadde Bostan Plaza)
The longest scuba dive in a controlled environment lasted 192 hours, 19 minutes 19 seconds. It was achieved by Cem Karabay (Turkey) inside a pool at the Activity Plaza of Cadde Bostan in Istanbul, Turkey, from 21 to 29 October 2011.