Very! Most of our Juneau whale watching tours offer guaranteed sightings. Juneau’s waters are full of herring and other baitfish, krill and plankton that the whales feast on all day! 150 humpback whales have been officially documented, and because the Inside Passage is a relatively narrow body of water, it makes the whales easy to spot. Our expert naturalist guides and boat captains know just the right spots to find whales & other wildlife.