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Dolphins Reveal a Mysterious Hidden Sense: They Can Detect Electric Fields
(www.sciencealert.com)
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Didn't we know about this? Or was that another sea creature I'm thinking of?
The exact same thought crossed my mind when I read the title. I'm pretty sure this has been known for a while.
Edit: just read the article. The Guiana dolphin was found to have this ability several years ago, now they've found evidence of it in bottlenose dolphins.
Hammerhead and shovelhead sharks can detect electrical fields I believe I read many years ago.
Pretty sure this is old news. Bees can do it too though