Question

Many animals use magnetism for navigation, and some scientists think it's even possible that humans have a sixth magnetic sense! Select and research an animal that uses magnetism for navigation. Describe how your animal navigates using magnetism, including how the sensory process works. Include an illustration.

Answer 1

Some animal species, such as certain species of birds and turtles, are known as magnetoreceptors, due to their ability to orient themselves thanks to small variations due to the Earth's magnetic field. Loggerhead-turtle makes large migrations throughout the year. These turtles are very sensitive to variations in the Earth's magnetic field. The Earth's magnetic field is not homogeneous and is more intense at the north and south poles than at any other point on the planet. These tortoises have tiny iron oxide crystals in their eyes that easily change their orientation due to changes in the Earth's magnetic field. This allows the turtles to have a magnetic map of the oceans. Because the Earth's magnetic field can hardly have two identical values ​​all over the earth, turtles can remember, even several years later, the beach on which they were born.