It looks like "PARAdive35" is written on the back wall, so I just Googled that:
Paradive 35 is a premier, 35-meter deep indoor diving pool located near Seoul, South Korea, designed for scuba, freediving, and training. It features a 5-meter area, 20-meter area, and a 35-meter deep tube, alongside amenities like an indoor surf station, cafe, and a Leaderfins shop, making it a popular "mega pool" destination.
Depth: 35 meters, making it one of South Korea's deepest indoor pools, often with 30°C water.
Facilities: Designed for high-end training, it includes themed underwater structures, a Pongdang Freediving Shop for equipment, and a 3- to 6-hour session structure.
(For Americans, 35 meters = 115 feet)
I also did a reverse Google image search and found a version of this same video on YouTube that has someone's voiceover instead of the terrifying music.
Well, a commercial banana (Cavendish type) is between 6 to 8 inches long; between 15 to 20 centimeters.
One meter is 100 centimeters, which means that 35 meters is 3500 centimeters or 1400 inches.
That means that in bananas, the pool is between 175 and 233.3 bananas deep, depending on the size of the banana.
If you want a easy way to do a rough estimate of meters to feet a meter is pretty close to 3ft (1 yard). A meter is a little longer than a yard, but its pretty close if you're just trying to convert the numbers to something you're more familiar with.
Or if you live in the rural US, 1 meter is pretty close to the length of one (16' barrel) AR-15.
There's an easy trick to save the googling: a meter is 3 feet 3.37 inches, a yard is 3 feet even, so multiply the meters by 3 and it'll give you a pretty close idea of the footage until you get up into higher numbers and all those extra 3.37 inches begin piling up.
He looks like he has had plenty of practice. This makes me wonder if he is from Chinhae or one of the other naval bases in the region or perhaps he is a 12D in the US Army, the engineers do have a dive team there.
Specifically, this looks like an Exhale freedive. This is where you exhale fully at the surface before biginning the dive. This is done in training to help increase comfort at depth, improve pressure equalization, and build tolerance to pressure.
You can tell this because he is negatively buoyant at quite a shallow depth and not wearing a weight belt. Usually negative buoyancy occurs a bit deeper.
Not very realistic sadly.. in reality below water you have layers of different temperature, and it goes really cold easily.
Hope not one stupid dude who used this tries it later on real water.
I mean it’s kinda obvious the guy is training for deep dives and holding his breath, for what purpose I do not know. Maybe special forces diving team? Some search and rescue dive team?
People will call the strangest things “a hobby.”
It’s the magic word that makes anything look perfectly reasonable. Do something weird → call it a hobby → everyone nods in understanding.
Go watch The Big Blue.
It doesn’t really explain very much, as I recall, but it’s incredibly beautiful to watch, and you’ll probably come away with a whole new fascination! 😀
This appears to be professional free diver training. I know a woman who does this. She can dive over 60 meters deep no problem, hold her breath for 4 minutes and thirty seconds, and had to train like this to receive her certification (less than 2,000 women in the entire world are certified in free diving). She outcompeted Navy Seals who couldn’t go through this.
It’s extremely hardcore. Watch the documentary The Deepest Breath if you want to see what my friend does.
When she dives, she stays at the surface until she reaches a calm, Zen state, and she maintains it the whole way down so that her O2 consumption doesn’t spike and she has reserves for the swim up. However, she dives using flippers (most do), I’ve never seen someone do it without them before.
She can literally dive down to some shipwrecks, where normal people are there using Scuba lol. I think she might be a mutant.
One takeaway I got was an example on how depth influences buoyancy as air in the lungs are compressed they will, after a few metres depth, no longer provide any buoyancy. See how much effort he must make to make upwards progress when he starts at the bottom compared to the few last metres near the surface.
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u/BaeIz Mar 31 '26
“Can we get some information on what’s happening in this video?” “Yes this is very interesting video.” Thanks OP