Longest submergence underwater in a controlled environment with air bell rests
Who
Khoo Swee Chiow
What
220 hour(s):minute(s):second(s)
Where
Singapore (Tampines Central)
When
The longest scuba submergence in a controlled environment is 220 hours by Khoo Swee Chiow (Singapore) at Tampines Central, Singapore from 16-25 December 2005 see his blog at http://www.daretodream.com.sg/expeditions.htm 1st record under new guidelines