Her dream job happens to be one of the most dangerous pursuits on earth. Meet Nan Hauser: whale expert, conservationist, and champion to the giants of the deep. From grueling days on the ocean, to taking on the U.S. Navy, to swimming with the graceful but highly unpredictable ten-ton cetaceans, she's made it her life's work to understand and preserve the whales and dolphins of Oceania. Her groundbreaking work and dedication prove that one person can make a difference.