Marine biologists concluded a study of the migratory patterns of large European eels (Anguilla Anguilla) released off the coast of Ireland, finding that the eels swim in deep, cold water during the day to prevent their gonads from developing too fast and burdening them with eggs.
Marine biologists concluded a study of the migratory patterns of large European eels (Anguilla Anguilla) released off the coast of Ireland, finding that the eels swim in deep, cold water during the day to prevent their gonads from developing too fast and burdening them with eggs.