October 25, 2010 Sumatra Earthquake event, collected on the seabed by Envirtech BPR, and received in real time at Control Center in Guangzhou. P-Waves travelled at about 5 Km/sec and reached the BPR position, 2600 Km far, within few minutes. Cause the position of the Sumatra Island respect the BPR, fortunately, no tsunami wave propagated in the South China Sea. (C) Envirtech S.p.A. - www.envirtech.com