Phil Vandenbossche & Nelson Kuna/CSIRO
Sonar scans of the Indian Ocean floor south of Christmas Island have revealed a Tolkeinesque landscape of towering peaks, ashen uplands and ominous volcanic craters.
The NOAA ship Okeanos Explorer used multibeam sonar to map the sharp Pao Pao seamount (right) and a flat-topped guyot (left) in New Zealand’s waters.
An accurate seafloor map can improve oceanographic and climate models, secure marine navigation, inform defence operations, and guide environmental decisions.
Scientist and seal, under the Antarctic ice.
McMurdo Oceanographic Observatory
Microphones on the seafloor recorded life under the Antarctic ice for two years – inadvertently catching seal trills and chirps that are above the range of human hearing. Could they be for navigation?
Boat noise can interfere with the underwater communication of fishes and other marine animals.
The noise from motor boats, sonar and other industrial activity interferes with the underwater chatter of fishes.
The wreck of the British merchant ship SS Apapa, sunk by a German U-boat off Wales in 1917.
Wrecks like the recently discovered USS Juneau reveal much about combat on the oceans.
A sonar image of the ‘Nessie’ found 180 metres deep in Loch Ness.
The hunt for ‘Nessie’ has been going on for decades but there’s a good reason why nothing has been found.
Australian Navy vessel Ocean Shield left Perth yesterday to join the search for missing flight MH370 and its black box flight recorders.
As the effort to find Malaysian Airlines flight MH370 moves inexorably towards the recovery stage, the challenge of finding the plane’s flight recorder (called the “black box” even though it’s actually…