- Stu Tolan
- 5:25:25 hour(s):minute(s):second(s)
- United Arab Emirates (Dubai)
The longest underwater live radio broadcast (unsupported) is 5 hours, 25 minutes and 25 seconds and was achieved by Stu Tolan (New Zealand) from 104.8 Channel 4 at Atlantis, The Palm, in Dubai, UAE, on 13 May 2017.
Read more: Dubai radio hosts achieves longest underwater live radio broadcast in Atlantis, The Palm aquarium