[email protected] Courtey Photo This photo submitted by Katie Wolf shows five mylar balloons found at Thompson’s Harbor State Park along Lake Huron. Great Lakes Great Responsibility founder Meag Schwartz says on the GLGR Facebook page, “Balloon releases have to eventually come down. Some alternatives to consider: planting a tree or floating (real) flowers on the water.” ALPENA — Today is Earth Day, but Saturday is the day the community is invited to join divers in cleaning up the Alpena area. Dive Into Earth Day: Community Cleanup is set for 10 a.m. to noon Saturday, starting from Starlite Beach. The event will be held, rain or shine.