Do you have a video playback issues?
Please disable AdBlocker in your browser for our website.
Due to a high volume of active users and service overload, we had to decrease the quality of video streaming. Premium users remains with the highest video quality available. Sorry for the inconvinience it may cause. Donate to keep project running.
In the early twentieth century, a mysterious ecological crisis nearly wiped out the fish that most people cared about in the largest freshwater ecosystem on earth-the Great Lakes.