Freediving or skin diving is a form of underwater diving where divers hold their breath for long periods of time, and rely on their own abilities rather than using breathing apparatus.
It is an ancient art that goes back to traditional fishing techniques such as spear fishing and oyster diving. The divers would practice meditative breathing techniques to improve their lung capacity, and ability to stay calm.
There are now a range of competitive competitions testing disciplines from deepest depths and longest time under.
We spoke to one freediver from our home town of Cheltenham – Adam Mustoe.