Humpback Whale Primary Escort Blowing Bubbles in Competitive Group

This is the primary or dominant escort in a humpback whale competitive group, also known as a heat run. Male whales are competing for the female whale, which is the one with a long white slash mark on her torso, and a smaller one closer to her face. This behavior of blowing a massive trail of bubbles requires a substantial supply of air. The respiratory and digestive tracts of most animals, including humpback whales, are not connected. It is therefore not clear how humpback whales execute this behavior. After observing this heat run for an extended period of time, I was able to watch the entire sequence from beginning to end three times, and thus to confirm that the dominant whale did not gulp air at the surface. It inflated its throat pouch with air when it was submerged. This suggests that there is a mechanism by which a humpback whale can temporarily connect its respiratory tract to its digestive tract, thus shunting air from its lungs to its throat. This sequence thus provides photographic support for just such an anatomical link, as first proposed in a 2007 paper in The Anatomical Record by Reidenberg and Laitman.

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Copyright: Copyright Tony Wu. All rights reserved. No duplication, reproduction or usage without prior written permission.
Image Size: 5752x3835 / 63.2MB; https://www.photoshelter.com/support/license#rm; https://www.tony-wu.com/contact-tony-wu; Whale Humpback Whale Southern Humpback Whale Animalia Chordata Mammalia Eutheria Cetacea Mysticeti Balaenopteridae Megaptera novaeangliae Megaptera novaeangliae australis Cetartiodactyla Baleen Whale CITES Appendix 1 Filter Feeder Marine Mammal Mysticete Rorqual Bubbles Heat Run Competitive Group South Pacific Tonga Vava'u Monochrome
Contained in galleries: Monochrome Whales, Humpback Whales Underwater

This is the primary or dominant escort in a humpback whale competitive group, also known as a heat run. Male whales are competing for the female whale, which is the one with a long white slash mark on her torso, and a smaller one closer to her face. This behavior of blowing a massive trail of bubbles requires a substantial supply of air. The respiratory and digestive tracts of most animals, including humpback whales, are not connected. It is therefore not clear how humpback whales execute this behavior. After observing this heat run for an extended period of time, I was able to watch the entire sequence from beginning to end three times, and thus to confirm that the dominant whale did not gulp air at the surface. It inflated its throat pouch with air when it was submerged. This suggests that there is a mechanism by which a humpback whale can temporarily connect its respiratory tract to its digestive tract, thus shunting air from its lungs to its throat. This sequence thus provides photographic support for just such an anatomical link, as first proposed in a 2007 paper in The Anatomical Record by Reidenberg and Laitman.