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.
Oceanic mantas (M.birostris) are the bigger of the two manta species; reaching a wing span (thatâs wing tip to wing tip) of up to 7 metres (23ft)! A large oceanic manta might weigh in at up to 2 tonnes (4,440 lbs), making them a real ocean giant!