Gill Haneth grew up watching the Apollo space missions on TV, dreaming of becoming an astronaut.0:26
Life, though, took her in the opposite direction.0:33
Whereas astronauts rocket into space, Gill plunges into the ocean depths as one of the world's top cave divers.0:37
She has had her stunning photographs published worldwide and won awards for her documentaries.0:46
But in addition to all this, She's a record breaker.0:52
She spent 21 hours underwater to get the world record for distance traveled underground and became the first woman to cave dive in the Antarctic.0:56
It was that expedition to the Antarctic in 2000 that really made Jill's name.1:07
She was heading to B-15, the largest iceberg on the planet, about the size of Jamaica, to explore the caves in it.1:12
Even though she didn't even know if there were any there.1:20
This sounds like a big enough leap of faith, but the iceberg had just broken away from the Ross Ice Shelf and was moving at the time, and any disturbance, even a few air bubbles, could cause the cave to1:24
After sailing for 12 days in rough seas from New Zealand and following in the footsteps of Ernest Shackleton and his historic expeditions, Jill and her team finally arrived at B-15.1:38
As she dived into a deep crack in the ice, Jill descended over 130 feet , the only sound coming from her oxygen tank.1:51
As the cave opened out, she discovered a diverse undersea world.2:01
We found a dazzling world of sea stars and other curious creatures.2:05
But the threat of disaster was always there.2:10
At one point, Jill felt a movement in the ice like an earthquake, and it was only later that she found out that a piece of ice had crashed into the entrance to the cave.2:14
If she had been near, she would have been killed.2:24
On her final dive, Jill and her diving partner were trapped by strong currents and only managed to escape by finding small handholds in the ice wall and pulling themselves along.2:28
Just 2 hours later, the iceberg shattered, leaving massive pieces of ice floating on the surface, and 2 very relieved divers.2:40
As she rather calmly put it, "The cave was gone."2:50
These kind of incidents would put most divers off for life, but Jill freely embraces her fear.2:54
She often gives multimedia presentations on what she learnt.3:00
She says that we mustn't avoid doing things that frighten and challenge us.3:04
To her, fear is an important part of life, and as she puts it, "If you don't chase fear, then you'll be running away from it for the rest of your life."3:09
One of the reasons that Jill is brave enough to face such dangerous expeditions is her confidence in technology.3:19
On her Antarctic expedition, special equipment was essential.3:26
She wore a heated wetsuit in the -1.2°C water.3:31
And instead of an air tank, she had a rebreather, a device like a spacesuit that recycles the bubbles you exhale along with extra oxygen.3:36
Even though she hasn't made it into space yet, her work may affect future space missions.3:45
I was experimenting with a 3D mapping device that cost almost £470 million.3:51
One day, NASA hopes to send this to the underwater caves of Europa.3:58
'One of the moons of Jupiter,' Jill said.4:02
'It seems that the girl that dreamt of outer space but ended up in the depths of the oceans may finally have the best of both worlds.'4:06
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