A sailfish , the fastest fish in the world, is capable of reaching speeds up to 68 miles per hour (110 kilometers per hour), rivaling the velocity of the world’s fastest sailboats. In stark contrast, Olympic medalist Michael Phelps, renowned for his swimming prowess, reaches a maximum speed of 4.4 miles per hour (7.08 kilometers per hour) in the 100-meter butterfly stroke.
The sailfish employs its remarkable speed and large dorsal fin to herd schools of sardines and anchovies, making it an efficient and formidable predator in the ocean. The sailfish’s dorsal fin, often referred to as a sail, can be raised and lowered and is used to create a visual barrier, driving prey into tighter groups. This behavior increases the sailfish’s hunting efficiency, allowing it to capture multiple fish with swift, precise movements.