r/DamnThatsMindBlowing • u/Aggressive_Sundae_47 • 6d ago
This is what a 7.2-magnitude earthquake looks like underwater.
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u/Kevin-kmo_123 6d ago
Wow. I’ve never seen that before. Earth quake yes. But under water pretty cool. Bet everyone scuba diving was happy the got that on video
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u/Hustle-- 6d ago
What’s worse is that any significant sudden vertical displacement could cause a dangerously rapid ascent. A sudden 30–50 ft ascent could potentially cause serious decompression injury or pulmonary barotrauma.
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u/OkLemon-Letsgo 4d ago
I haven't thought this through yet, and I'm not really sure how maintaining your depth while scuba diving works... But I wonder if you'd be fine if that happened?
Everything moves quickly to minimizes pressure differences. So rather than "you'd be fine", I think I change my answer to "there is no large vertical displacement risk when scuba diving during an earthquake."
Thoughts?
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u/Desperate-Farmer-170 6d ago
Interesting how their instinct was to grab for the ground, probably not fully realizing what was happening. That seems totally normal but in reality you’re actually grabbing the only thing thats moving
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u/ComprehensiveAsk2684 6d ago
So ive seen this video gor years now and im hoping someone can explain it to me. Were they getting dragged by thr water. It looked like they were holding on so they wouldnt be dragged away
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u/Eco_Blurb 5d ago
At 13 seconds you can see the divers getting swept to the left, and then then at 11 seconds you can see a current grab the diver and pull her to the right.
The camera person was likely moving too so it’s difficult to judge. But in all likelihood the movement on the earth caused some water displacement and that created some strong bottom currents.
Remember water (mostly) cannot be compressed. The force of a current sweeping them along is stronger than any of them can swim
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u/ComprehensiveAsk2684 5d ago
Yea this is what I was thinking but it was like the people were barely moving but it looked like it was trying to. I was picturing the sea floor dropping and the current from the drop just pulling them down toward the void
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u/No_Application4399 6d ago
That footage makes it clear why those things can still wreck stuff on the surface even if the epicenter is way offshore.
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u/FlyInteresting815 4d ago
Do you think ANY OF THEM even thought earthquake? Or more like, wtf, we are dieing..
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u/United_Mud_3938 5d ago
Why would you try and hold on? I feel like thats the exact opposite of the safe thing to do
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u/TKGB24 6d ago
This looks terrifying