This documentary chronicles the lives and relationship of record-setting freediver Alessia Zecchini and world-renowned safety diver Steve Keenan.

How long can you hold your breath? Competitive freedivers can swim underwater for three or more minutes at a time.

This extreme sport is one of the most dangerous in the world — particularly for freedivers swimming to great ocean depths on a single breath.

In this powerful documentary from director Laura McGann, we discover the lives and careers of champion freediver Alessia Zecchini and expert safety diver Steve Keenan.

Using archival footage, personal video and photographs, and vivid reconstruction, The Deepest Breath takes viewers on a journey through monumental achievements and devastating heartbreak.