Humpback Whales (Megaptera novaeangliae) cooperatively bubble-net feeding in Chatham Strait (upper jaw and baleen detail) in Southeast Alaska, USA. Pacific Ocean.

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

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

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.

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 fluke-up diving after a bubble-net set.

An adult humpback whale repeatedly tail-lobbing in the inverted position (Megaptera novaeangliae) after dissaffiliating from a group co-operatively "bubble-net" feeding whales along the west side of Chatham Strait in 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) Adults cooperatively bubble-net feeding. Chatham Strait, Southeast Alaska, USA.

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

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. This group started feeding together with only six animals and ended up with sixtee

Adult Humpback Whale (Megaptera novaeangliae) breaching in Stephens Passage, 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

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