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.
These mantis shrimp average 3-18 cm in length. They have long, narrow bodies, and in addition to their raptorial appendages, a pair of maxillopods, three pairs of legs used for holding prey, three pairs of walking legs, and five pairs of swimmerets, before the body terminates in the telson and paired uropods.