Do American eels navigate pirmarily by sight?

American eels (Anguilla rostrata) primarily navigate using their sense of smell, not vision. They have well-developed olfactory organs and can detect minute concentrations of chemicals in the water, which helps them orient themselves and find their way during their long migrations. While eels do have eyes and can use them to detect light and dark, their vision is not as critical for navigation as their sense of smell.