Great Lakes Now tries to make every episode interesting and educational.

In this episode, Michigan DNR researchers document the northern madtom – a tiny, endangered catfish that’s venomous. Then take a cinematic journey through Earth’s largest freshwater ecosystem – the Great Lakes watershed – with a preview of a new documentary series.  And “The Catch” has news about the lakes you love.

Watch the episode here:

It’s a lot for one episode, so why not take this quiz to see how much of it stuck with you: