This is a vintage illustration of a fantastical creature called a "Gudgeon Shark". The creature is a bizarre hybrid, with the body of a shark and the head of a man. The man has a full beard and mustache, and is wearing a top hat. The shark's body is dark gray, and it is swimming in a body of water. A smaller, colorful fish is swimming near the shark. The background features rocky terrain and a few birds flying in the sky. The illustration is done in a detailed, hand-colored style, reminiscent of 19th-century natural history illustrations. The text "Gudgeon Shark" is written in bold letters below the image, and a small note at the bottom indicates the lithographic process used to create the image.