“Out of nowhere I get hit with this immense force from my right side and this force was so strong it threw me off my surf board,” he says. “I landed in the water and before I could even look around and figure out what had happened I look down and see this shark biting into my right leg. This for me is that distinct moment when time just stops.”

Brett is joined by fellow survivors Justine Barwick and Dave Pearson. Together the share their stories and discuss life, death and why they ultimately feel lucky.

This episode of The Documentary, comes to you from BBC OS Conversations, bringing together people from around the world to discuss how major news stories are affecting their lives.