Megalodon

Megalodon or megatooth is an extinct species of shark that is considered to be the largest shark and the largest fish ever lived. Fossils found were dated between the early Miocene and the Pliocene. It is closely related to the great white shark. A new study found that the newborn Megalodon were larger than average adult human. It also estimates that the body size of the species to be about 15 meters and not 16 meters or above as indicated by the earlier studies.