Mysteries of the Great Lakes

Fun fact: The North American Great Lakes have the largest concentration of fresh water in the entire world, which would be a great thing if the lakes themselves weren’t “on the brink of ecological catastrophe” (according to a Congressional bill that proposes different ways to restore the lakes to good condition). This film examines the gigantic bodies of water, looking at the creatures that live in and around the five lakes, and what can be done to preserve them.