Magnetic crystals found in the noses of salmon could aid navigation
31 Jan 2022
Living compasses: Salmon hatch in rivers then return as adults to their riverbed of birth to spawn. This migration can extend over thousands of kilometres and studies suggest that the fish use an internal compass to navigate. (Courtesy: Zureks/CC BY-SA 3.0)
Tiny crystals of iron-based magnetite have been found in specialized receptor cells in the noses of
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