A fall down the stairs at the age of 30 changed Kimberley Chambers' life forever. We talk to the open-water swimmer and first ever woman to swim the treacherous passage from the Farallone Islands to San Francisco Bay. Stretching 30 miles it passes through the 'red triangle' where 38% of America's shark attacks take place. Recorded at San Francisco's South End Rowing Club, we talk to her about her relationship with sharks, and the allure of operating at the bleeding edge of risk. Her documentary on the attempt appears at the Mill Valley Film Festival this month. Trailer at https://www.kimswims.com/film/