Deep-diving robots will venture kilometres under the Southern Ocean's surface to determine how it is holding up in the face of climate change in the CSIRO Investigator's longest ever voyage.
The 10-year-old research vessel on Friday set off on a 9260km round-trip journey, which was due to take it about 2300km from Hobart to the Southern Ocean and sea-ice edge before it returns to Fremantle in Western Australia in early March.
