'Do we drown or rocket to the surface?'

Rich Osborn had the perfect summer job as a scuba diving instructor in Cyprus, until a dive with friends changed everything.

On a day off, the then 21-year-old and three instructor friends, decided to go for a carefully planned deep-dive.

But at 40m under the ocean's surface the group ran out of air.

With nothing left in the tanks they had a decision to make - drown there and then, or rocket to the surface and risk catastrophic injuries from the benz.

Presented by Beth Rose with Rich Osborn.

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A transcript is available here.