Freshwater Fish, Amphibians Supercharge Their Ability to See Infrared Light ​

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Salmon migrating from the open ocean to inland waters do more than swim upstream. To navigate the murkier freshwater streams and reach a spot to spawn, the fish have evolved a means to enhance their ability to see infrared light.

Source: Freshwater Fish, Amphibians Supercharge Their Ability to See Infrared Light ​

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