Casco Bay Lines (Maine State Pier, 56 Commercial St. 207/774-7871. www.cascobaylines.com) provides narrated cruises and transportation to Casco Bay Islands. Lucky Catch Cruises (170 Commercial St. 207/761-0941. www.luckycatch.com) sets out to sea in a real lobster boat so passengers can get the genuine experience, which includes hauling traps and the chance to purchase the catch. Choose from several itineraries. Odyssey Whale Watch (Long Wharf. 207/775-0727 or 800/437-3270) leads scenic cruises, whale-watching, and fishing trips. Portland Schooner Co. (Maine State Pier, 40 Commercial St. 207/766-2500 or 877/724-6663. www.portlandschooner.com) offers daily sails aboard a vintage 1924, 72-foot racing schooner. Bring your own food and beverage and help hoist the sails of this beauty.