Sentinels of the Deep

First Nation scientist Andrea Megin studies giant squid in the South Pacific by sending cameras, suctioned to backs of diving sperm whales, into the deep ocean. Josh Templeton, a marine biologist, joins Andrea's team aboard the research ship after following a rare, old sperm whale from Hawaii to the Galapagos Islands. Together, they explore Earth's last frontier and discover a terrifying reality. They must risk everything to save the whales, their tumultuous relationship, and life on Earth.