The Humphrey Imax Dome Theater debuts its latest film today: Mysteries of the Great Lakes. The cameras document some of the oddities hidden underneath the world’s largest lakes—from unusual fish to sunken ships—while the filmmakers tell of the environmental damage done to the lakes and what’s being done to fix it. There are screenings today at 10:30 a.m., 3:30 p.m. and 6:30 p.m.
