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

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

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

Adult humpback whale (Megaptera novaeangliae) cooperatively bubble-net feeding in Southeast Alaska, USA. Pacific Ocean. Note the expanded ventral pleats as well as the baleen hanging from the upper jaws.

Adult humpback whales (Megaptera novaeangliae) cooperatively bubble-net feeding in Southeast Alaska, USA. Pacific Ocean. Note the expanded ventral pleats as well as the baleen hanging from the upper jaws. Southeast Alaska, USA. Pacific Ocean. (rr)

Adult Humpback Whales (Megaptera novaeangliae) cooperative bubble-net feeding for herring in Iyoukeen Bay, Chichagof Island, Southeast Alaska.

Adult Humpback Whales (Megaptera novaeangliae) cooperative bubble-net feeding for herring in Iyoukeen Bay, Chichagof Island, Southeast Alaska.

Adult Humpback Whales (Megaptera novaeangliae) cooperative bubble-net feeding for herring in Iyoukeen Bay, Chichagof Island, Southeast Alaska.

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 in Stephens Passage, Southeast Alaska, USA. Pacific Ocean.

Humpback Whale (Megaptera novaeangliae) cooperatively bubble-net feeding (extreme detail, note baleen plates in upper jaw) in Chatham Strait, Southeast Alaska, USA.

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 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.

Adult Humpback Whale (Megaptera novaeangliae) fluke-up dive in Southeast Alaska, USA. Pacific Ocean.

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.

Adult Humpback Whale (Megaptera novaeangliae) breaching off Point Adolphus in Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) Aerial view of adults co-operatively bubble-net feeding. Gulf of Maine, USA (rr)

Humpback Whales (Megaptera novaeangliae). Aerial view of adults co-operatively bubble-net feeding. Gulf of Maine, USA (rr)

Humpback Whales (Megaptera novaeangliae). Aerial view of adults co-operatively bubble-net feeding. Gulf of Maine, USA (rr)

Humpback whale (Megaptera novaeangliae) bubble net feeding, taken from the air. Gulf of Maine, USA

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