Jill Heinerth

Jill Heinerth (born 1965) is a Canadian cave diver, underwater explorer, writer, photographer and film-maker. She has made TV series for PBS, National Geographic Channel and the BBC, consulted on movies for directors including James Cameron, written several books and produced documentaries including ''We Are Water'' and ''Ben's Vortex'', about the disappearance of Ben McDaniel. Provided by Wikipedia