Sunda Trench is considered to be part of the Pacific Ring of Fire as well as one of a ring of oceanic trenches around the northern edges of the Australian Plate. In 2005, scientists found evidence that the 2004 earthquake activity in the area of the Java Trench could lead to further catastrophic shifting within a relatively short period of time, perhaps less than a decade. This threat has resulted in international agreements to establish a tsunami warning system in place along the Indian Ocean coast. For about half its length, off of Sumatra, it is divided into two parallel troughs by
Second Battle of the Java Sea discovered that the wrecks of HMS "Exeter" and HMS "Encounter" were missing from the ocean floor. The Guardian newspaper subsequently reported that the wrecks of HMS "Exeter", HMS "Encounter", and part of HMS "Electra", as well as the submarine USS "Perch" were missing and presumed illegally scavenged. Commenting on their removal, one of the men involved in their original discovery is stunned at the magnitude of the salvaging that appears to have taken place. Second Battle of the Java Sea The Second Battle of the Java Sea was the last naval action of the Netherlands East Indies campaign, of 1941–42.