This one time I was freedivng in the southwest coast of portugal.
I had this floating signaling device with a cable ruuning down to my
hand, just to keep some small fishing boats warned about me.
I went into a small cave at a depth of some 9, 10 meters max, I so this
beautiful fish on my way in, so I stopped for a while there, and then a
unuasually big grouper that I aproached carefully as it slowly baked up
into the cave.
I was really distracted, so when i finally decided to come up, I was
kind of short on air, but it was not that bad.
Well the problem was, as turned around to head back, some of the cable
was caught isnside the cave. When i got to 7 meters, or so, I noticed
the cable a bit tangled around my fins. I figured I would just be
annoying, so I kept swimming up.
But when I starded floating, i gained up speed and suddenly my long
freediving fins were tied togheter. I had my hands tied and was
strapped to the bottom at some 5 meter depth.
I had no experienced-smart-quick diver reaction here. I should have
stopped right when I saw the problem, because by this time I got scared
and my brath simply disappeared.
Some lucky twist of laziness saved me from my suicidal pose. I had a
forgotten knot on the rope, and that ended up as the weak point where
the rope broke when I started twitching like an idiot.
I got to the surface like some houdini wierdo, with my feet tied
together, white lights flashing before my eyes and still just glad to
be there.
Now you can make fun of me when I stop evolving trought the bottom when
i freedive, and turn all the way back along the cable to free every bit
of it up before surfacing, but you know what? I'll just keep doing it.
(And i started trying much harder to stop and think - even while
freediving.)