When you hear the words “Great Lakes food web,” what do you think? Maybe you think about the fish that live there and the plankton they eat, but do things like plastics enter your mind? This two-hour program highlights how the Great Lakes food web has changed with the introduction of invasive species and how non-organic microplastics are also having an impact. Sail dates and times vary throughout August. Visit fareharbor.com/schoolship for the up-to-date schedule and to buy tickets.