Caribbean Eastern Route

Alaska's Inside Passage delivers the most intense wildlife spectacle in cruising, handily beating the Caribbean Eastern Route (#4) for creature encounters. Humpback whales breach in 85% of summer cruises, tidewater glaciers calve blocks the size of a car every 20 minutes, and bald eagles perch on nearly every shoreline tree. A single week in Juneau can yield 16 mammal species and 200 bird species—compared to the Caribbean's sparse 30 bird species and few marine mammals. The glaciers alone cover 5,000 square miles of ice, with 30 actively calving tidal glaciers within sight of cruise ships. Passenger satisfaction for wildlife viewing hits 92%, 20 points higher than the industry average. While the Norwegian Fjords (#1) offer spectacular geology, Alaska adds living, moving drama: whales breaching at 30 mph and glaciers cracking at 60 decibels.