when they "hear" someone digging for them. This makes harvesting clams a backbreaking task. The clam shell may be broken during this procedure, ruining it. Mussels, on the other hand, are lying attached to rocks on the shore during low tide, and a bucketful can be collected in minutes. Marketing demands have reduced the mussel population greatly, and now they are often "grown" by farmers on floating barges where they can be easily "picked" when ready. Ocean geography, tides, and weather Typically Great Chebeague has tides under normal conditions. Ocean floor geography in the general area can vary drastically, thus careful navigation must be practiced when boating, even in small vessels. Many islands, including Great Chebeague, have extended rock outcroppings that are completely underwater during high tide, but may be lurking just below the surface as the tide drops, and may appear out of the water during low tide. The rip tide can be several knots, and rowing against it is physically impossible: Extra care must be taken when venturing out in small watercraft. Even on the clearest day, a thick fog can suddenly "roll in" out of nowhere, reducing visibility to zero. Even during the warmest summer months, the ocean temperature is barely above . Falling out of a boat into the water anytime between September and April can be dangerous, if not fatal, depending on the time of year. Swimming is enjoyed usually in inlets and coves where the water temperature is slightly higher, and off the pier or docks. Like most islands in the area, Chebeague has as much rocky cliffs for a shoreline as beaches. The "Niblic" beach by the boatyard and Deer Point by Chandler's Cove are popular beaches for their soft stretch of sand. On a clear day at Deer Point, one can see Mount Washington in New Hampshire. When the sun goes down, temperatures can drop drastically and, even on the warmest summer days, nights are often very cool and can require long sleeves and pants and even a fire in the fireplace. Winters can be brutal, and usually by September, most of the non-year-round residents are packed up and gone. Services and stores Chebeague Island has its own post office. There is cell phone service on the island. The Town of Chebeague Island has a webpage that provides access to town documents, a town calendar, and other information. The Town Administrator is