The movement of the hard drive's read/write heads over different areas of the disk when accessing fragmented files is slower, compared to accessing the entire contents of a non-fragmented file sequentially without moving the read/write heads to seek other fragments.
The dorsal fins are small and at the base of the tail. The largest mantas can reach 1,350 kg (2,980 lb). In both species the width is approximately 2.2 times the length of the body; M. birostris reaches at least 7 m (23 ft) in width while M. alfredi reaches about 5.5 m (18 ft).
Adult male mandrills are about 75-95 cm (30-37 in) long and weigh about 19â37 kg (42â82 lbs). Larger males weighing about 54 kg (119 lbs) have also been spotted. Female mandrills are smaller than their male counterparts. Adult females are around 55â66 cm (22â26 in) and weight around 10â15 kg (22â33 lbs).