Humpback Whale Bubble Net Feeding — Alaska Southeast
The humpback whale (Megaptera novaeangliae) cooperative bubble-net feeding in the inland waters of southeastern Alaska — Frederick Sound, Chatham Strait, and Stephens Passage — is the world's finest accessible example of coordinated cetacean hunting. Groups of 4–18 humpbacks cooperatively herd herring schools: one whale produces a rising spiral of bubbles that creates a cylindrical net the fish won't cross, while others call to coordinate the lunge, and the group erupts simultaneously at the surface in a circular formation of open mouths, pink baleen, and cascading fish that constitutes one of the Pacific's most extraordinary wildlife moments. The spectacle's combination of the choreographic precision (audible on hydrophone as coordinating calls 30 seconds before the surface event), the scale (a coordinated group lunge involves 15-metre whales erupting in a 50-metre circle), and the Southeast Alaska landscape makes this one of North America's most remarkable marine wildlife encounters.
About this spectacle
From the deck of a boat on Frederick Sound, Chatham Strait, or Stephens Passage, the build-up to a bubble-net feed is almost as thrilling as the eruption itself. Hydrophones reveal coordinating calls beginning some 30 seconds before the surface event — a low, haunting pulse beneath the hull. Then the bubble ring appears, a widening circle of white froth perhaps 50 metres across, and everything tightens. Suddenly, up to 18 humpbacks burst through the centre simultaneously, mouths agape, pink baleen plates glinting, cascades of herring arcing in every direction and seabirds diving into the chaos. The scale is staggering: 15-metre animals working in a formation that looks almost choreographed, rising together and rolling back into the sound within seconds. The surrounding landscape — forested mountains, glacially carved channels, the pewter light of Southeast Alaska — frames the spectacle in a way few marine wildlife venues can match. Encounters can be observed multiple times on a single day's outing during peak season.
When to go
May — Oct, peak Jun — Sep
Getting there
Nearest airport: PSG. Nearest city: Juneau.
Booking options
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