Marine parks need to cover large swathes of ocean, but they also need to cover the right areas if they are to deliver the best conservation. New research off Australia's northwest suggests how.
Scientists are using detailed computer models of the ocean to trace debris back through the currents to the potential crash site.
How flawed citation practices can perpetuate scientific ideas even before they've been fully established as true.
They give us part of the air we breathe but microscopic phytoplankton can also be toxic. They are also on the move thanks to climate change so a new Australian database hopes to monitor any changes.
A combination of factors – pollution, disease and overfishing – is harming corals but scientists have found clues to effective treatment by studying corals' microbiome.
Microplastics go largely unseen but are a scourge of the oceans. Filmmaker Jo Ruxton answers questions about the challenge of filming it.
What scientists first thought was an ancient species that had survived undiscovered for many millions of years, turns out to be part of something equally mysterious.
Climate change isn't the only thing making sea levels higher and cyclones more intense.
Researchers have long used such techniques to learn about currents and tides.
Infectious diseases are a normal part of ocean ecosystems, just as they are on land. But climate change is altering the oceans in ways that could make marine diseases spread farther and faster.
The open oceans are the world's "wild west", falling outside any nation's jurisdiction. UN negotiations are aiming to draft new laws for the high seas.
From time-shifting earthquakes to bizarre creatures, the crushing depths of the hadal zone are another world.
The Great Barrier Reef might get all the attention, but what about our western coral reefs? Warmer waters and human impacts mean these reefs are in trouble.
The 2011 Japan tsunami illustrates how more marine creatures are crossing the oceans than ever before - and not all of them are friendly travellers.
Africa has some wonderful beaches. A serious traveller should visit at least one of them once in a lifetime.
Many corals can't make it through the bleaching events caused by warming ocean waters. But some can – and scientists are trying to learn more about the sources of their resilience.
Mining the deep oceans for minerals may soon become a reality, but the risks involved are many. So who is able to regulate this emerging industry?
The dust storm that turned Sydney red in 2009 triggered plankton blooms in the Tasman Sea, demonstrating how we might fertilise the ocean to take up more carbon dioxide.
One of the Australian government's new research priorities is "environmental change". But can be hard to know how to tackle such huge and interlinked issues as climate change and species extinctions.
How will climate change affect life in the oceans? New research shows that the answer is likely good and bad.