Don Shirley

It's a dark, dark place.

Now, as I'm dropping, I'd expect to see bubbles from Dave, because you don't make bubbles in a rebreather, but when you're coming up, you do, because gas expands.

And you have to vent that gas off.

I expect to see some bubbles, see something going on below me.

I don't see anything.

So then I think, oh, something is wrong.

I look down and I can see a small, small, small line in the distance.

And the agreement that Dave and I had is if you've got a problem, the distress signal is waving a light.

The intention was if he had a problem, he would wave the light.

I would carry on down.

I had the gas to do it.

I was the only diver that actually could go to those depths.

Everyone else had limits.

As I'm going down, I'm going, right, okay, I'm probably going to go all the way down.

So I'm preparing for that fact.

Now, I've heard that thud before, where you're at depth and you get an implosion of some sort.

It's not an explosion, it's an implosion.

So you get almost like a sucking thud and you feel it in your body because in the water you can feel all these things.

So now I had to put the brakes on.

What I do is I add a little bit of oxygen.