Issue 245

fish pens on the ocean

Scientists take a close look at what’s behind low-oxygen levels under salmon farms in Tasmania’s Macquarie Harbour.

diver looking down through blue waters at whale shark

They're elusive, whale sharks, so we're keeping an eye on them using satellite tracking to see how far they travel and, in a world first, taking DNA samples to see just how old they are. Here they are on Ningaloo reef.

school of striped yellow fish near reef

Here's one aspect of rising sea levels to think about - the loss in light reflected through ocean waters. Marine ecologists are asking, what are the limits, and threats, to coral skyscrapers? Because coral reefs don't just spread out - they also spread up.

Black tiger prawns in hand

CSIRO’s efforts to help the Australian farmed prawn industry recover from this devastating outbreak also required a rapid response to protect a vital research facility that is assisting the industry pick itself back up.

vessel bow crashing into blue sea

The Southern Ocean has an enormously influential role on the Earth's climate, it reaches from the Antarctic into all the world's oceans. What research now shows is local ocean processes have global impacts.