We’ve all heard about it, but …
From “Most Vertebrates – Including Humans – Descended from Ancestor With Sixth Sense”
(ScienceDaily Oct. 11, 2011), we learn:
People experience the world through five senses but sharks, paddlefishes and certain other aquatic vertebrates have a sixth sense.
They can detect weak electrical fields in the water and use this information to detect prey, communicate and orient themselves.
A study in the Oct. 11 issue of Nature Communications that caps more than 25 years of work finds that the vast majority of vertebrates — some 30,000 species of land animals (including humans) and a roughly equal number of ray-finned fishes — descended from a common ancestor that had a well-developed electroreceptive system.
But we apparently lost it.