The term 'Bay in Maine' can be solved by the crossword solution CASCO, which is a five-letter word. Casco Bay is a large bay located in the U.S. state of Maine. It is bordered by the states of New Hampshire and Massachusetts to the east and south, respectively. The bay is home to many islands, including Peaks Island, Great Chebeague Island, and Long Island. Casco Bay is also home to a variety of wildlife, including seals, whales, and seabirds.