Adult Humpback Whales (Megaptera novaeangliae) cooperatively bubble-net feeding in Stephens Passage, Southeast Alaska, USA. Pacific Ocean.

Humpback Whale (Megaptera novaeangliae) breaching in Stephens Passage, Southeast Alaska, USA. Pacific Ocean. Southeast Alaska, USA. Pacific Ocean. (rr)

Humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding off Chichagof Island in Southeast Alaska, USA. Pacific Ocean.

Humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding (note the baleen hanging from the upper jaws) Chatham Strait. Southeast Alaska, USA, Pacific coast

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding in front of Mendenhall Glacier in Stephens Passage, Southeast Alaska, USA. Pacific Ocean.

An adult humpback whale breaching (Megaptera novaeangliae) after dissaffiliating from a group co-operatively "bubble-net" feeding along the west side of Chatham Strait in Southeast Alaska, USA. Pacific Ocean.

A group of adult humpback whales (Megaptera novaeangliae) co-operatively "bubble-net" feeding near the charter yacht Safari Spirit along the west side of Chatham Strait in Southeast Alaska, USA. Pacific Ocean. This group started feeding together with only

A group of adult humpback whales (Megaptera novaeangliae) co-operatively "bubble-net" feeding along the west side of Chatham Strait in Southeast Alaska, USA. Pacific Ocean. Shown here is an adult tail-throwing after a bubble-net set.

A group of adult humpback whales (Megaptera novaeangliae) co-operatively "bubble-net" feeding along the west side of Chatham Strait in Southeast Alaska, USA. Pacific Ocean. Shown here is an animal fluke-up diving in front of the charter yacht Safari Spiri

A group of adult humpback whales (Megaptera novaeangliae) co-operatively "bubble-net" feeding along the west side of Chatham Strait in Southeast Alaska, USA. Pacific Ocean. Shown here are two adults fluke-up diving after a bubble-net set.

Humpback Whales (Megaptera novaeangliae) Adults cooperatively bubble-net feeding. Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) Adults bubble-net feeding in Chatham Strait, Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Stephen's Passage, Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Stephen's Passage, Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Stephen's Passage, Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding near the Safari Quest in Chatham Strait in Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding (note the herring jumping to get away inside the whales mouth) in Stephen's Passage, Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding near small whale watching boat in Stephens Passage, Southeast Alaska, USA. Pacific Ocean.