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 giant oceanic manta ray can grow to a disc size of up to 7 m (23 ft) with a weight of about 1,350 kg (2,980 lb) but average size commonly observed is 4.5 m (15 ft). It is dorsoventrally flattened and has large, triangular pectoral fins on either side of the disc.
In general, every member of the genus Manta has a large and flattened body whose center is called âdiscoâ. The reef manta ray disc has a width of 3 to 3.5 meters, while the giant manta ray lives up to its name measuring up to 9 meters wide. The head of both species is wide, eyes on each side and the long nose in front.