If you are a Floridian diver or are planning a trip to Florida or the Florida Keys, this I.D. card is a must for identification of the reef fishes you may encounter on your dive. This full-color marine life identification card allows you to know what local wildlife you are looking at when you see it. Card is waterproof, making it perfect for in and around the water. This 6 x 9 inch (15 x 23 cm) plastic card depicts 60-plus types of reef fish in color drawings, and is hole-punched to secure a lanyard for underwater use.