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

Humpback Whale breaching (Megaptera novaeangliae). Tenakee Inlet, S. E. Alaska

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

Adult Humpback Whale (Megaptera novaeangliae) breaching in Chatham Strait 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 (note the baleen hanging from the upper jaws) Chatham Strait. Southeast Alaska, USA, Pacific coast

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.

Humpback Whale (Megaptera novaeangliae) Calf breaching/head-lunging. Chatham Strait, 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) cooperatively bubble-net feeding Chatham Strait, Southeast Alaska, USA.

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.

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.

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.

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