The ocean is home to some of the fastest animals on Earth, as shown in a video highlighting 15 of these creatures. Sailfish lead the list with speeds up to 68 mph, followed by Yellowfin Tuna at 50 mph, and a type of Marlin that can reach speeds of 80 mph when hooked. Scuba divers can remember that the fastest humans swim at only 5 mph, demonstrating the amazing speed of these marine animals. The video offers more details and a complete list of these speedy ocean dwellers.