When you're in Florida, the Bahamas, or a beach in the Caribbean, this I.D. Card can be real handy. Know what you are looking at when you see it. Card is waterproof so you can carry it into the water without fear of ruining it, and if you're a diver it is easily stored in your BCD pocket. This 6 X 9-inch plastic slate depicts 60-plus fish shells and invertebrates in color drawings, hole-punched to secure a lanyard for underwater use.