The Amazing Journey of European Eels: Why Some Swim, Others Climb

European eels are born in the Sargasso Sea and travel far to reach freshwater rivers and lakes. Scientists found that these eels have unique traits that affect how they migrate. Some eels love to swim against strong currents, while others are great at climbing obstacles. Researchers studied four important areas: the eel's life story, body functions, behavior, and brain power. They discovered that eels with certain combinations of traits were more likely to be climbers or swimmers. For example, some eels were fast learners and loved to explore, so they tended to climb. Others were quick problem solvers and did well in cognitive tasks, so they preferred to swim. When the eels reach fresh water, their unique traits help them settle in different areas. This diversity is crucial for the eels' survival and ability to adapt. Protecting this variety is essential for the future of these endangered creatures.