The Panther Marting FishSeeUV Inline Spinner has a simple scientific premise: fish see colors as if they were under a black-light. Fish identify each other by using ultraviolet vision to pick out markings on other fish, which are invisible to the human eye. These lures will attract and catch fish anywhere!FeaturesEye-popping patternsFish see Ultraviolet colors as if under BlacklightParticularly effective on cloudy daysA great choice for clear or murky watersUnique convex/concave shape of blade sends out sonic vibrationsEasy spinning ultraviolet blade is irresistible to fish