"Natural World" The Woman Who Swims with Killer Whales (2011)

Not many people will jump into the water and swim with six-ton predators, and not many people can share the scientist Ingrid. Visser's enthusiasm for studying wild orcas. By swimming alone, she discovered that New Zealand is home to unique shark belts and ray hunting of orcas. Recently, there has been a worrying trend-the size of endangered populations has not increased, but there has been an unusual number of deaths in 2010. This film documents Ingrid's mission to explore the cause alone and the disturbing new news about the health of the ocean revealed by her findings.