Sea of Hope: America's Underwater Treasures

2017AL47 min7.1/10

Oceanographer Sylvia Earle sets out to inspire the creation of 'blue parks' to protect the ocean.

To commemorate the 100th anniversary of the U.S. national parks system, beloved oceanographer Sylvia Earle sets out to inspire a new generation to create 'blue parks' to protect the ocean realms. With the help of Nat Geo photographer Brian Skerry, Sylvia and a dedicated group of marine conservationists explore the blue depths and embark on a year-long environmental quest.