Study finds that dolphins may be able to detect magnetic fields


A new study suggests that dolphins are attracted to magnets and can detect magnetic fields in objects.
Researchers at the University of Rennes 1 and the University Institute of France observed how six bottleneck dolphins responded to both magnetized and demagnetized barrels. The study, published in The Science of Nature, found that dolphins may be magnetosensitive — a.k.a., they can sense Earth's magnetic field.
Dolphins approached the device with shorter latency when it contained a strongly magnetized neodymium block compared to a control demagnetized block that was identical in form and density and therefore undistinguishable with echolocation. We conclude that dolphins are able to discriminate the two stimuli on the basis of their magnetic properties, a prerequisite for magnetoreception-based navigation. [The Science of Nature]
The researchers noted in the study that more research is needed to determine "a more precise and conclusive result" about the study's implications. Dolphins wouldn't be the first animals to align themselves with Earth's magnetic pull, though — previous studies have suggested that dogs align themselves with Earth's magnetic field to poop.
The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
"Dolphins are able to discriminate between objects based on their magnetic properties, which is a prerequisite for magnetoreception-based navigation," Dorothee Kremers, lead author of the study, said in a statement. "Our results provide new, experimentally obtained evidence that cetaceans have a magnetic sense, and should therefore be added to the list of magnetosensitive species."
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
Meghan DeMaria is a staff writer at TheWeek.com. She has previously worked for USA Today and Marie Claire.
-
Why is Trump backtracking on the Hyundai immigration raid?
Today’s Big Question Backlash threatens investment in US manufacturing
-
The 9 restaurants to eat at this very moment
The Week Recommends They’re award-winning. Isn’t that reason enough?
-
Trump proposes ending quarterly earnings reports
Speed Read The SEC would have to approve any changes
-
SpaceX breaks Starship losing streak in 10th test
speed read The Starship rocket's test flight was largely successful, deploying eight dummy satellites during its hour in space
-
Rabbits with 'horns' sighted across Colorado
speed read These creatures are infected with the 'mostly harmless' Shope papilloma virus
-
Lithium shows promise in Alzheimer's study
Speed Read Potential new treatments could use small amounts of the common metal
-
Scientists discover cause of massive sea star die-off
Speed Read A bacteria related to cholera has been found responsible for the deaths of more than 5 billion sea stars
-
'Thriving' ecosystem found 30,000 feet undersea
Speed Read Researchers discovered communities of creatures living in frigid, pitch-black waters under high pressure
-
New York plans first nuclear plant in 36 years
Speed Read The plant, to be constructed somewhere in upstate New York, will produce enough energy to power a million homes
-
Dehorning rhinos sharply cuts poaching, study finds
Speed Read The painless procedure may be an effective way to reduce the widespread poaching of rhinoceroses
-
Breakthrough gene-editing treatment saves baby
speed read KJ Muldoon was healed from a rare genetic condition