Man spent 120 days living under the sea and claims it taught him about humanity

A man has completed a world record of living under water for 120 days, and apparently, it gave him some enlightenment about the human race.

German aerospace engineer has now spent the longest time under water without depressurization off the coast of Panama.

Rudiger Koch was staying in a 30 sq meter capsule, and when he came back on land for the first time in nearly four months, Guinness World Records adjudicator Susana Reyes handed him his honor.

Koch is co-founder of Ocean Builders, which designed and constructed the functional underwater room for its 2024 use.

The 59-year-old had beaten the previous record holder, American Joseph Dituri, who lived under a Florida lagoon for 100 days.

Dituri held his position for two years, having undertaken his post in July 2023.

Shockingly, Dr Dituri claimed his time under water had ‘de-aged’ him by 20 years, claiming that his internal structure changed – particularly his inflammation markers.

Rudiger Koch was staying in a 30 sq meter capsule for 120 days (Ocean Builders)

But while Koch hasn’t gone on to say he felt any younger, he did come back with a newfound epiphany about humanity.

“It was a great adventure and now it’s over there’s almost a sense of regret actually. I enjoyed my time here very much,” Koch said, per The Guardian.

He went on to reveal to an AFP journalist halfway through his mission that he hoped his time under water would change the way we think about human life.

Specifically, about where we could live.

“What we are trying to do here is prove that the seas are actually a viable environment for human expansion,” he said.

He said it made him think about humanity (Ocean Builders)

The Guinness World Records stated on its website that Koch had ‘entered Ocean Builders SeaPod Alpha Deep at a depth of 11 m (36 ft) just off the coast of Puerto Lindo, Provincia de Colón, Panamá, on 26 September 2024 and left on 24 January 2025’.

It added: “For this attempt, the Seapod was used as the facility, which featured both above and below water living areas. This record attempt was intended to show the potential for sustainable ocean living and expand our understanding of future habitat possibilities.”

Koch, who was a fan of Captain Nemo in the Jules Verne book published in the 19th century, titled, Twenty Thousand Leagues Under the Sea, kept a copy of it in his bedside table.

In his pod, he also enjoyed a lot of modern things, which probably made it that much easier to chill under the surface for so long.

Apparently, he had things like a bed, toilet, TV, computer and internet, and an exercise bike.

His capsule was also attached to another chamber above the water level, which contained a staircase that could allow people to visit Koch, deliver food to him, or even bring in a doctor if needed.

With electricity provided by solar panels on the surface, and a generator in case things went South, Koch could sustain his basic needs as he thought about life and humanity.

It sounds pretty cool, but I’ll leave that kind of fun for other people.