Australia’s inspiring ‘humpback comeback’ and why krill need protection
Release Date: 10/28/2025
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info_outlineNews of Australia’s “humpback comeback” is making waves globally. Numbers of humpback whales (Megaptera novaeangliae) on the nation’s east coast have rebounded to an estimated 50,000 from a historic low of just a few hundred before commercial whaling was outlawed in the 1970s. And wildlife scientist and whale expert Vanessa Pirotta joins the podcast to discuss this inspiring conservation achievement.
Pirotta emphasizes this is a good news story that deserves to be celebrated, and that it could also bolster action for other whale species that are struggling, including the southern right whale (Eubalaena australis) and blue whale (Balaenoptera musculus). However, she stresses that vigilant protection for all whale species remains necessary.
This good news is tempered by the fact that the key food source for humpbacks in this part of the world is Antarctic krill (Euphausia superba), which is now being heavily harvested by industrial fishing fleets after protections for the species recently lapsed. Pirotta notes that krill are a keystone species for both humpbacks and a much broader array of marine life, including penguins and seals.
Pirotta also discusses her cetacean health research based on the collection of “whale snot” (see Mongabay’s explainer video about this method, which involves the use of drones, here) and whale monitoring work conducted with Indigenous conservation group Gamay Bay Rangers. Listeners can learn more about her work at vanessapirotta.com and find her book, Humpback Highway, here.
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Image credit: A humpback whale. Image by ArtTower via Pixabay (Public domain).
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Timecodes
(00:00) The ‘humpback comeback’
(14:50) Why krill need protection
(19:29) The Gamay Rangers sharing Indigenous knowledge
(28:05) Antarctica and whale snot
(32:12) Migaloo the white whale
(36:16) How whale populations impact all of us