Don Shirley

And then he did something that no one has ever done at those sort of depths.

He got out a reel, joined it to the line, and started to reel out down the slope.

So he's reeling out and he actually had gas that would have taken him to 300 meters.

But at 270 meters, he saw a body.

We then mutually decided without words that we'd actually go down and pick up the body in a couple of days' time.

When you're deep, really, only you can solve your problems.

Only you can breathe for you.

Only you can swim for you.

You're actually in the darkest of blackest of places that actually eats your light.

The light just disappears.

It just evaporates.

It's like the cave is eating it up.

It's a dark, dark place.

The cave, when it goes down, is a big sinkhole.

We don't really, even today, know where the bottom is or how deep it really is.

People have been to what is the bottom that you can actually easily get to, but I'm sure it goes further.

I thought, wow, I just want to go and look underneath here and see where it goes, see what it does.

So that's really where the quest for diving and then cave diving really started.

I did diving.

Almost from day one, I spent half my time in the evenings doing diver training and things like that.