Humpback whale with broken spine travels almost 5,000km doing breaststroke
- Moon the humpback whale was likely injured because a vessel struck her back, BC Whales said
- Researchers said the marine giant will almost certainly not survive to make a return journey to Canada

In “considerable pain”, a determined humpback whale tracked by researchers for more than a decade, recently finished swimming almost 5,000km from Canada to Hawaii – all with a broken spine.
Moon, a lone humpback whale, travelled from British Columbia to Maui with a severe spinal injury from a vessel strike, according to a post the non-profit research group BC Whales shared on Facebook.
The whale was spotted in waters near the Hawaiian island December 1.
She was immediately identified because of her contorted body which researchers said is due to it being struck by a vessel.
Every September for the past decade, researchers at Fin Island research station in Gitga’at First Nations territory spotted Moon in the coastal waters to feed on krill.
In 2020, researchers said they were elated when she appeared with a calf, passing on the tradition of migrating between feeding and breeding grounds to her offspring.