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 Underwater Identification. This Full-Color Marine Invertebrate and Corals Identification Card allow you to know what Local-Wildlife you are looking at when you see it. Card is Waterproof and Easily-Stows in your BCD Pocket. This 6" X 9" (15 x 23 cm) Plastic Slate depicts 60-Plus Invertebrates and Corals in Color Drawings, and is Hole-Punched to Secure a Lanyard for Underwater Use. Easy to maintain just Rinse the Fish Card with Fresh Water after a Day in the Sea. Fish ID Cards make a Great Gift Idea.