The multiple senses that humans and animals possess beyond the 'standard five' are fascinating. In humans, this includes mechanical senses for balance fequilibrioception') or for locomotion ('propioception'), and many more. Electroreception is the biological ability to perceive electrical stimuli. In some species of the animal kingdom, these senses are highly developed -particularly in aquatic or wet terrestrial environments where charge is carried better. As an example, some species of shark can detect DC fields as low as 5 nV/cm.
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