The U.S. Postal Service celebrated the wonder of sharks by issuing the Sharks Forever stamps featuring five species that inhabit American waters ? the mako, thresher, great white, hammerhead and whale sharks. The Stamps were issued on July 26, 2017 at the Newport Aquarium in Newport, Kentucky. Possibly no other creatures are as mythologized ? or as misunderstood ? as sharks. Blockbuster thrillers and sensationalized media have fueled the belief that sharks are monsters: unthinking, bloodthirsty, vengeful and primitive. While they are ancient creatures, having emerged long before the first dinosaurs, after 400 million years the 500 or so known shark species have adapted to their ecological role. Sharks? adaptations include light, flexible skeletons of cartilage, teeth replaced without limit and skin covered by a hydrodynamic surface of tiny tooth-like structures. Their keen senses include one that detects electrical signals given off by prey and enables navigation by Earth?s magnetic field. Their nervous systems are also adapted to sense miniscule water movements, such as the struggles of a far-off fish. Your artwork is proudly displayed and protected within our premium acrylic display frame. The frame is made of two acrylic panels custom cut to the exact dimensions of the stamp sheet and held together with 8 powerful nickel-plated magnets. The background panel is glossy black acrylic. Dimensions: 8.75 inches Wide x 9.5 inches High Includes a FREE table-top stand or hang it on a wall with a 3M frame strip (or similar) which is also included. Care Instructions: Wipe gently with mild glass cleaner. Use a soft cloth towel and avoid paper towels.