Humpback Whales Make Longest Mammal Migration

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Humpback whales in the Atlantic have been tracked making the longest migration on record. New Scientist reports that seven individual whales swam 5,160 miles between Antarctica and the Caribbean coast of Costa Rica. One mother and calf made the trip in 161 days. While some researchers claim that gray whales hold the record for longest mammalian migration—from Mexico to the Arctic, at 4700 miles—no individual gray whale has been documented travelling the full extent of their migratory range, and it’s possible that no individual makes the entire migration. Kristin Rasmussen at Cascadia Research Collective in Olympia, Washington, says the new humpback data are important in light of proposals to hunt humpbacks, including Japan’s decision to catch 50 humpbacks each year as part of its [bogus] scientific whaling program. “Whales don’t respect political boundaries,” she says. “Killing whales in one area could potentially impact their population half way around the world.”–Julia Whitty

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Fact:

In-depth journalism that investigates the powerful takes real money and is so damn important right now.But it doesn’t take a Mother Jones investigation to know that billionaires and corporations will never fund the type of reporting (like they do politicians) we do that exists to help bring about change. Instead, our mission-driven journalism is made possible by people power, and has been for 46 years now since our founding as a non-profit.

In “TITLE TK” Monica Bauerlein writes about the perilous moment we’re in, and why it’s so important that we raise $325,000 by the time November’s midterms are decided so we can be ready to throw everything we have at the big issues facing the nation no matter what happens. Please help MoJo’s people-powered journalism with a donation today.

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