Mark Visser said he could hold his breath for 6 minutes and 4 seconds.
Notes on verification
The quote is directly attributed to Visser in ABC News and corroborated by USC press release and other independent sources, though the underlying breath-hold time itself is self-reported and not independently measured. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.875 clusters=2 claim_tier=notable | kind=attributed eligibility=high]
Sources
- Elite athlete testing should be used on ageing population says Sunshine Coast academic - ABC News (seed:sports_and_combat)
- https://usc.edu.au/explore/usc-news-exchange/news-archive/2016/february/big-wave-surfer-faces-rigorous-test-at-usc (corroboration)
- https://peoplepill.com/i/mark-visser-1/ (corroboration)