Freediver Ant Williams: Why I want to dive 70 metres below ice

Ant Williams has swum 223 meters on a single breath. He has freedived to 100m and held his breath for 8 minutes.

His next freediving challenge is sub-zero Arctic depths.

The 46-year-old wants to break the world record for the deepest ice dive. The record, set in 2015, is 65m on a single breath.

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