Mexico’s Taam Ja’ Blue Hole is the deepest known underwater sinkhole in the world, researchers have discovered — and they haven’t even reached the bottom yet.

New measurements indicate the Taam Ja’ Blue Hole (TJBH), which sits in Chetumal Bay off the southeast coast of the Yucatan Peninsula, extends at least 1,380 feet (420 meters) below sea level.

That’s 480 feet (146 m) deeper than scientists initially documented when they first discovered the blue hole in 2021, and 390 feet (119 m) deeper than the previous record holder — the 990-foot-deep (301 m) Sansha Yongle Blue Hole, also known as the Dragon Hole, in the South China Sea.

  • MamboGator@lemmy.world
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    6 months ago

    There’s also a giant eel lurking in one of the caves that pops out when you swim near it and scares the shit out of me every time.

  • Lexam@lemmy.ca
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    6 months ago

    THIS is where we need AI! Load a bunch of cute underwater drones that can go down and gently explore and take pictures and videos for us. Instead some paper will use AI for a" journalists rendition" of what might be down there.

    • FuglyDuck@lemmy.world
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      6 months ago

      So I remember launch day in SWOTOR. We rolled pubie, and the “capital hub” so to speak was coruscant, it was the world you were sent to after getting off the noob world.

      Some one was standing at the flight path for the hangar bay/capital building and stuff, looking over the side and wondering what was down there.

      So, I told him- sarcastically, I might add- that there was a loot chest with guaranteed epics, maybe even a legendary mount.

      I ran off cuz… launch day, had stuff to do…. About thirty seconds later I’m getting blasted in zone chat cuz the dumbass jumped.

      So somebody else told the guy he was jumping off the Wrong spot, go to the other corner. Look for the air vent.

      I feel bad for this guy, cuz he jumped like 3-4 times being a lootwhore before apparently retelling imp.

  • Flying Squid@lemmy.world
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    6 months ago

    Don’t go down there, guys. Everyone down there is an asshole. Trust me, I went down there with some squid buddies and those guys in that cave system are fucking racist.

  • Seraph@kbin.social
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    6 months ago

    I wonder how long it would take them to map out the caves and things - using drones and such. Screw diving down there!

    • tal@lemmy.todayOP
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      6 months ago

      I once knew a guy who spelunked and wrote cave-mapping (not underwater cave) software as a hobby. Had another friend who worked on automated cave-navigating robots.

      It’s a surprising pain to do.

      Above ground, surveyors can typically use landmarks. But underground, you don’t have long lines of sight.

      GPS doesn’t work underground, as you can’t receive through rock.

      Errors in inertial navigation can add up over time, if you’ve ever seen an automated-mapping robot without some kind of absolute reference have error build up – the map twists and distorts.

      While it’s not specific to being underground, being underground can, if there’s iron deposits nearby, dick with compass accuracy.

      The guy who wrote the cave-mapping software did some sort of mechanism where you’d take the longest lines of sight you could from cave wall to cave wall, and then measure angles between laser beams, ping-pong off walls through the cave.

      I don’t know how well even lasers work in underwater caves. My understanding is that part of the reason that cave diving can become really dangerous is that if you stir up silt, visibility can head towards zero, which can leave cave divers with no way to see anything and no obvious route to the surface. I’d imagine that silt could also cause problems for laser beams.

    • RaoulDook@lemmy.world
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      6 months ago

      from the Wiki article: “The deepest blue hole in the world at 300.89 meters (987 feet) deep is in the South China Sea and is named the Dragon Hole, or Longdong.”

      Longdong, haha!

    • Twinklebreeze @lemmy.world
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      6 months ago

      The deepest blue hole in the world at 300.89 meters (987 feet) deep is in the South China Sea and is named the Dragon Hole, or Longdong.

      :|