Blue Eye FX was on location at the Only One Apnea Center to film current Constant Weight World Champion freediver Sara Campbell with freediving legend Umberto Pelizzari.

Sara was embarking on something new ... something she had told her parents she would never try. This is No Limits diving. The standard diving method is holding on to a weighted sled to the target depth, and there open a pressurised air tank that fills a large inflatable balloon which carries the freediver back to the surface. There have been several world-class freedivers who have lost their lives in the pursuit of the ultimate depth in a No Limits dive.

So Sara trained with the best for her introduction to sled diving. After getting instruction from Pelizzari, Sara headed out to sea to put them into practice. Pelizzari was the focus of the 2001 IMAX production Ocean Men: Extreme Dive, directed by renowned underwater photographer Bob Talbot.