ROCKLAND — On Saturday, Nov. 12, 9-11:30 a.m., join the Friends of Maine Coastal Islands at their visitor center at 9 Water St. in Rockland to learn about lichens. Ever wondered what all those little crusty things are on the rocks and bark of trees? What do you really know about them? Their composition? Reproduction? Place in the ecosystem? Uses? Did you know that the oldest living organisms are 8,600-year-old lichens in the Arctic? Join Diann Henderson for a hands-on class to learn about the lichens found in Maine. Diann is a retired middle school science teacher and a graduate of the Maine Master Naturalist Program. There will be an optional field trip on Mt. Battie in the afternoon, weather permitting.

Register at: bit.ly/3FxKYwL or on the Friends of Maine Coastal Islands NWR website at mainecoastislands.org. For questions, email tori_tibbetts@mainecoastislands.org, or call 594-0600 ext. 5114.