They use what are called DRY SUITS, you are completely enclosed by the suit.
When the guy says they used their “bare hands to feel around” that was hyperbole, a dry suit encloses you completely, when you get out of the sh!t you are washed down just like when you get a HAZMAT washdown.
That sounds better. Who wrote that crap (heh, heh) about “bare hands”?
Still, there’s no dry suit and SCUBA in the world that would get me down there. Those are brave people.
I was wondering what kind of commercial diver didn’t wear gloves.