Humpback Whales (Megaptera novaeangliae)- During our season we find Humpback Whales on more than 99% of our tours. There are many humpback whales that feed, socialize and play in the waters near Juneau from mid-April through October. Humpbacks are among the most playful whales, and often breach (leap from the water), bubble net feed, and slap their tails while we watch. We find humpback whales more often than any other mammal. Most of the humpback whales here in Juneau spend their winter in Hawaii. There are a few humpback whales that can be found here year around.