Humpback population boom fuels boat strike crisis in Australia — SkimNews
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- IWC passed a resolution Friday making vessel strikes a "priority concern" globally, noting that most collisions go unseen and unreported
- WWF Australia gathered images of humpback whales with deep propeller lacerations along Australia's east coast, including a calf with fresh cuts spotted in Hervey Bay last month and a female known as "bladerunner" who has carried propeller slash injuries for more than 20 years
- Rebecca Dunlop, a humpback expert at the University of Queensland, said injuries appear on whales' backs and rears, suggesting they surface as the propeller passes over and cannot alter dive behaviour quickly enough to avoid an intercept path
- East coast humpbacks rebounded from fewer than 300 in the 1960s to between 40,000 and 50,000 today after the IWC's 1963 whaling ban, while one in 10 Australians hold a boat licence and more than half a million of the country's 970,000 registered boats sit in Queensland and NSW
- Dr. Raphael Mayaud of Griffith University warned a strike does not need to kill a whale to cause serious harm — loss of fluke tissue reduces swimming efficiency, with knock-on effects on migration, feeding, body condition, and reproduction that can persist for years
- California shipping companies compete on public scorecards rating speed-limit adherence during high-risk periods, and San Francisco Bay is trialling AI-assisted whale-spotting cameras to give captains earlier warning
Why it matters: With humpback numbers rebounding to 40,000-50,000 along Australia's east coast and over 970,000 registered boats sharing those waters, the IWC's resolution acknowledges that vessel strikes now pose a documented welfare crisis — survivors carry pain, reduced mobility, and reproductive costs for decades, making this a problem of lasting individual harm, not just whale fatalities.
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