If you look carefully at the snout of a dolphin, you'll see two rows of tiny pits, known as vibrissal crypts, When dolphins are born, these pits house whiskers that soon waste away to leave empty craters. ... In at least one species of dolphin, they can sense electricity.

Do whales use electroreception?

This discovery has a lot of significance because most marine mammals, including whales, resort to the use of echolocation and vision while foraging for food. ... Thus, the study also corroborates previous findings that some mammalian species possess the ability of passive electroreception.

How does electroreception work in platypus?

Platypuses use thousands of mechanoreceptors and electroreceptors in their bill skin to hunt prey in murky rivers and streams. ... Using a side-to-side motion of its head, the platypus gauges the direction and distance of its next meal by collecting, and combining, these flows of sensory information.