Salmon are well known for their ability, after growing to maturity in the ocean, to find their way back to the streams where they were born in order to breed. For this kind of navigation, they likely:

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Quizplus · Accepted Answer

Salmon likely use a variety of environmental cues to navigate, including the Earth's magnetic field, olfactory cues, and visual landmarks. This allows them to accurately locate the stream where they were born, even after spending years at sea.

Salmon Are Well Known for Their Ability, After Growing to Maturity