David Thoreson seems to have been on adventures most of his life, whether bicycling around the United States, Canada and New Zealand or exploring the oceans and polar regions of the world. In 2007, David and the crew of Cloud Nine became the first American sailors in history to transit the Northwest Passage from the east to the west. In 2009, sailing aboard the scientifically-equipped, Ocean Watch, David became the only American sailor to ever navigate the Northwest Passage in both directions. In June of 2010, David completed the 28,000-mile circumnavigation by sail of the North and South American continents on the 64-foot Ocean Watch.

David's work has appeared across a broad spectrum of media from the National Park Service and Smithsonian to the Wall Street Journal and PBS.

A new photo book, "One Island, One Ocean," about the recent expedition around the Americas was published in November of 2011 by Weldon Owen in San Francisco. An hour-long documentary on the voyage, produced with ABC affiliate KOMO (Seattle), was recently nominated for an Emmy. David has owned and operated a fine art gallery since 1996 which offers original prints and stock photography.

With his unique education and experiences, David is speaking and presenting publicly about modern exploration and major environmental issues, such as climate change, ocean acidification, plastics in the ocean, arctic ice loss, energy and resource development. David has built dynamic presentations, exhibits and documentary films utilizing his adventures to bring these important issues into context.