http://www.sciencemag.org/news/2021/05/sharks-use-earth-s-magnetic-field-navigate-seas

Sharks like this great white might use a magnetic “sixth sense” to find their way in the open seas.

Most Uber drivers need a smartphone to get to their destinations. But sharks, it seems, need nothing more than their own bodies—and Earth’s magnetic field. A new study suggests some sharks can read Earth’s field like a map and use it to navigate the open seas. The result adds sharks to the long list of animals–including birds, sea turtles, and lobsters–that navigate with a mysterious magnetic sense.