Humpback Whales blowing and diving and Five Fingers Lighthouse. Frederick Sound. Stephen's Passage. Petersberg. Alaska. Spend the day exploring in Frederick Sound and Stephen's Passage — another excellent chance to view humpback whales and other marine wildlife. Pass by Five Fingers Lighthouse and watch for playful antics at a large sea lion haulout made from dozens of rocky islets. Later, cruise picturesque bays, where evergreen forests crowd the shores. When a humpback whale dives, the tail rises into the air showing a distinct shape and coloration unique to each whale.  Using photography, researchers capture this image to identify each whale. This website is a collection, or catalog, of the best photographs of nearly 1900 different humpback whales seen in southeastern Alaska across the past three decades.