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Magnetoreception is a sense which allows an organism to detect a magnetic field to perceive direction, altitude or location. This sensory modality is used by a range of animals for orientation and navigation, and as a method for animals to develop regional maps. For the purpose of navigation, Magnetoreception deals with the detection of the Earth's magnetic field.
Magnetoreception is present in bacteria, arthropods, mollusks and members of all major taxonomic groups of vertebrates. Magnetoreception in humans is controversial.