A look at how beavers and wolves interact changing the water and how loons, owls, moose, bears and millions of people depend upon these lakes many take for granted.
How winter has shaped life in the Great Lakes; a polar vortex paralyses fish and ducks attract hundreds of bald eagles while wolves hunt a deer trapped by ice, but are manipulated by ravens.
Spring in the Great Lakes brings unpredictable temperatures along with visual wonders including glowing rocks, spawning salmon, and leaping predator fish.
