The Fastest Reptile in the World, Leather-back Sea Turtle

This turtle , Leather-back Sea Turtle, species can move at the speed of 21.92 mph in the water. That is interesting, considering that the leather backs spend their entire life in the water, and only come on the land to lay eggs. A turtle being the fastest reptile may sound a bit unconvincing, but one has to take a note of the fact that this species is also the largest of all living sea turtles measuring somewhere between 6-7 ft in terms of total length.

It is not really difficult for a creature of this size to clock a speed of 20 mph - at least not when it has a hydrodynamic body equipped with powerful paddle-like fins.