Blue Whales

S1 E6: Stephen And Mark Go To The Sea Of Cortez Mexico In Search Of Blue Whales There Mark And Stephen Get Involved In A Project To Collect Sea Lion Poo From An Island So That Scientists Can See How The Changing Ecosystem Is Affecting The Wildlife They Then Spend A Week On Board Horizon The Ship That Will Take Them To Blue Whales On Horizon They Encounter Humbouldt Squid The Giant Squid That Is Taking Over The Ocean And Attacking Divers And Fishermen Mark Takes A Small Plane To Find Blue Whales And He Finds One Mark Then Guides The Boat And Stephen Finally Sees A Blue Whale For Himself