An aerospace engineer has just spent 120 days not in the aviation , nor in blank — but underwater .
On Friday , Rudiger Koch terminate his hundred-and-twentieth 24-hour interval in a ejector seat submerged in the Caribbean , set up an official Guinness World Record for spending the retentive amount of sentence underwater without depressurization . His aim was to show that ocean are viable habitats for future human expansion , as reported byAFP .
“ 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 , ” the 59 - class - older human being from Germany tell AFP . “ It is beautiful when things calm down and it gets saturnine and the ocean is glowing . ” He lionise the victory with champagne , a cigar , and a swimming .

Rudiger Koch looks out into the ocean from his underwater capsule.© Ocean Builders via X
🌊 Day 120 ! Mission Accomplished ! 🎉
The Living Underwater Challenge is complete ! Thank you for being part of this journeying in showcasing the future of ocean habitation . 🌍 💙
📢 Join us LIVE on IG today for the Award Ceremony ! 🕐 1:15 postmortem examination EST 🔗 IG Link : https://t.co / hVS9s6NNfnpic.twitter.com/9m8lWW5V5S

— Ocean Builders ( @OceanBuilders)January 24 , 2025
Koch spent about four month in a 322.9 - straight - metrical foot ( 30 - substantial - m ) capsule 36 metrical foot ( 11 measure ) below the airfoil of the urine off the coast of Panama . Constructed by Ocean Builders — a company co - launch by Koch that ’s working on sustainable sea livelihood — the abridgment had a bed , toilet , internet , electricity , TV , and an exercise bike . It did n’t , however , have a exhibitioner ( which makes his celebratory diva on Friday all the more apprehensible ) and specify admission to fresh water .
“ It ’s like come alive up from a dream . I was in a sorcerous dreamland , ” he said , as report byThe Times .

The subaquatic capsule was relate to an above - water pod by a tube comprise a spiral stairway . The stairs were just for visitant , however , such as a doc , or fellowship and friends bring in supplies . In fact , the abridgement was equipped with four cameras to swear that Koch never emerged , concord to AFP .
“ We needed witnesses who were monitoring and verifying 24/7 for more than 120 days , ” Susana Reyes , the Guinness World Records adjudicator who substantiate the young Earth platter , told AFP . The previous disk bearer wasJoseph Dituri , an American serviceman who live in an underwater Florida lodge for 100 day .
The point of Koch ’s visit under the sea was to show the voltage for sustainable aquatic human expansion .

“ Moving out to the ocean is something we should do , that would be actually a share to restore things like reefs , ” he toldCBStwo calendar month into the dangerous undertaking , though he did n’t expand on how Ocean Builder ’s capsules could contribute to that environmental vision .
“ Our applied science will allow refinement to move onto the sea and it will unlock the ocean as a young frontier with a quality of life that is unbeatable anywhere else , ” according to the Ocean Builderwebsite . “ We believe that by learning to hold out on the water we will open a raw wave of eco - sustainable innovation that will lead to be more sustainably on state . ”
It remains to be seen how or if the experience impacted Koch ’s health — and who else , in the future , might be interested in hold up 36 feet below water .

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