Most of us here live in a way that’s dependent on electricity, but we are generally unaware of electrical phenomena in natural environments (except for lightning). However, many kinds of animals are able to sense the small electrical fields that are associated with virtually every organism (and Earth itself). This sensory ability can be used in several ways.
Water is a better conductor of electrical signals than air, so even tiny inadvertent signals from individual electric fields can be transmitted better through water than through air. And many studies have explored electroreception in aquatic organisms.
Many fishes, both freshwater and marine, are known to have electroreception. The structure of
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