Mondo Knows Facts
Sea turtles navigate oceans using Earth magnetic field
Hatchling sea turtles detect magnetic inclination and intensity.
Tiny magnetite crystals inside sea turtle brains act as a biological compass, allowing hatchlings to detect both the angle and strength of geomagnetic field lines. This internal map guides them across thousands of miles of open ocean back to their exact natal nesting beaches.
Where this comes from
Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.
Go further
More facts like this
Dung beetles navigate in straight lines using the Milky WayNight-active dung beetles use the starry sky gradient to roll dung balls.GPS relies on a constellation of at least twenty-four active satellitesThe Global Positioning System calculates positions using atomic clock signals from medium Earth orbitCrossing the International Date Line shifts calendar dates by a dayPacific oceanic date boundaries adjust calendar days for global travellersThe narwhal tusk is actually an overgrown canine toothA narwhal spiral tusk contains millions of sensitive nerve endings.The blue-ringed octopus carries venom strong enough to kill humansA tiny blue-ringed octopus holds enough tetrodotoxin to paralyse 26 adults.All clownfish are born male and can change into femalesThe dominant male changes sex if the group breeding female dies.
Tags: sea-turtle, ocean, navigation
Sea turtles navigate oceans using Earth magnetic field: the short answers
- Where does this come from, and can I check it?
- Hatchling sea turtles detect magnetic inclination and intensity. The figure is taken from Smithsonian Ocean, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
- Is this really a animals fact?
- Yes. It sits on the Animals shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
- What else can I read about it?
- The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.