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

Adult Pacific Humpback Whales, Megaptera novaeangliae, cooperatively bubble-net feeding, Southeast Alaska

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) cooperatively bubble-net feeding in the fog. Chatham Strait, Southeast Alaska, USA.

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

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

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding 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.

Humpback Whales (Megaptera novaeangliae) Aerial view of adults co-operatively bubble-net feeding. Chatham Strait, Southeast Alaska, USA. Pacific Ocean.

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

Adult humpback whales (Megaptera novaeangliae) cooperative bubble-net feeding in Iyoukeen Bay, southeast Alaska, USA.

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

Humpback Whale (Megaptera novaeangliae) breaching after 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.

Adult Humpback Whale (Megaptera novaeangliae) breaching in Chatham Strait in Southeast Alaska, USA. Pacific Ocean.

Humpback Whale feeding (Megaptera novaeangliae). Chatham Strait, S. E. Alaska

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

Humpback Whale feeding (Megaptera novaeangliae). Chatham Straits, S. E. Alaska

Humpback Whales feeding (Megaptera novaeangliae). Chatham Straits, S. E. Alaska

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