A North Atlantic right whale has done something scientists didn't know was possible: it crossed the Atlantic and showed up off Ireland before making its way back to Boston. This isn't just a rare sighting — it's the first time researchers have documented one of these whales starting its journey in European waters.
The whale was first photographed off the Irish coast in 2024, then spotted again near Boston. What makes this different from the seven other right whales known to have crossed the Atlantic is that all the others were already catalogued in their usual habitat along the U.S. and Canadian coasts before they ventured east. This one appeared in Irish waters completely unknown to science.
"It's hard to say if they're looking for food or they're just exploring," said Amy Warren, a scientific program officer with the New England Aquarium's Anderson Cabot Center for Ocean Life. The whale's motivation remains a mystery — researchers are still piecing together why it took such an unusual route.
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Start Your News DetoxA Population Learning to Adapt
There are only about 384 North Atlantic right whales left in the world, and nearly all of them live in the western Atlantic. For decades, they've followed the same migration routes along the U.S. and Canadian coasts. But over the last ten years, warming ocean temperatures have been pushing them farther north into Canadian waters, forcing them to adapt to changing conditions.
Scientists suspect there was once a thriving subpopulation of right whales in the eastern Atlantic, until industrial whaling wiped them out in European waters centuries ago. This recent sighting hints that the species might be exploring — or re-exploring — old territory.
Other right whales have shown similar wanderlust. One whale named Mogul spent years off the U.S. coast, then turned up in Iceland and France before returning home. A female whale only surfaces when she's pregnant, vanishing for a decade between calves. These individual stories suggest the species has more behavioral flexibility than researchers once thought.
"Encounters like this highlight both their resilience and the importance of international cooperation to support their recovery," said Daniel Palacios, director of the right whale ecology program at the Center for Coastal Studies. The sighting underscores how little we still understand about these whales — and how much more there is to learn about how they might adapt to a changing ocean.
