
Croatian freediver Vitomir Maričić held his breath underwater for 29 minutes and 3 seconds, setting a new Guinness World Record for the longest breath held voluntarily underwater. The attempt took place in a 3-meter-deep pool at the Bristol Hotel in Opatija, Croatia, in front of five official judges and around 100 spectators.
His record not only shattered the previous mark by nearly five minutes, but also surpassed the breath-holding abilities of many marine mammals, including bottlenose dolphins and rivaling harbor seals.
For context, the average person can hold their breath for just 30 to 90 seconds, and even elite freedivers typically max out around 10 to 11 minutes without oxygen assistance.
To achieve this, Maričić used a technique called denitrogenation, breathing pure oxygen for 10 minutes before the attempt. This supercharged his blood with oxygen and flushed out nitrogen, allowing his body to store nearly five times more oxygen than normal.
While this method is permitted under Guinness rules for oxygen-assisted breath holds, it still demands extreme physical and mental control.