Friday Harbor Whale Museum: Most likely, you'll have spent considerable time on deck looking out for whales as you sail the Pacific Northwest, so this well presented museum on First Street is a chance to learn more about them. Spread over two floors, it includes information about whale species, sightings maps, a family tree of the resident orca pod, models and artifacts, and an exhibit on the danger plastic presents to the marine world. Entrance is $9 and the museum is typically open from 9 a.m.to 6 p.m.