The distance the seafloor has spread appears to be the same on both sides of the Mid-Atlantic Ridge but not in the Pacific Ocean off the coast of South America where there is no 90 million year old seafloor. The rate of spreading is faster in the Pacific Ocean than the Atlantic Ocean at around 42.6 millimeters per year, which is faster than the average rate of fingernail growth of 3.5 millimeters per month or 42.6 millimeters per year.