7,500: Miles of shoreline connecting Maine, Massachusets, New Hampshire and Canadian provinces along the Gulf of Maine

36,000: Square miles of ocean filling the gulf

5,000: Rough number of islands dotting the gulf

250 billion: Gallons of fresh water flowing into the gulf annually from more than 60 rivers

10 feet: Smallest tide in the gulf, in Cape Cod

50 feet: Largest tide in the gulf, in the Bay of Fundy

Source: Gulf of Maine Ocean Observing System http://gomoos.org/aboutgulfme/