The oceans are filled with sounds produced by animals. However, a recent study shows that ocean sounds are diminishing due to nutrient pollution and ocean acidification.
We've building in the sea for centuries, and it's putting our oceans out of balance.
More of Australia's oceans should be placed under high protection, according to the latest marine reserves review.
In coming decades many oil and gas platforms will have to be retired. Rather than being dismantled, they could be given a new lease of life as artificial reefs, helping industry and the environment.
Tiny organisms change ocean acidity to benefit themselves.
'Smell-free seas' would be a disaster for marine life.
Storms like those that lashed Australia's east coast flush pollution out to sea.
Cephalopods are able to adapt rapidly to changing conditions.
The next cancer breakthrough could be found in international waters – but who's in charge of the high seas?
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.
It didn't turn out well for the whale who went to Westminster, but others have made a happy home in British waters.
The 2011 Japan tsunami illustrates how more marine creatures are crossing the oceans than ever before - and not all of them are friendly travellers.
Iron and nutrients from Antarctica's bedrock are carried into the oceans – nourishing entire food webs.
Corals are under threat from warming seas, and new research shows that even the toughest corals will suffer.
Over the past five years we've seen a significant increase in research on ocean acidification and warming seas, and their effect on marine life. Overall, unfortunately, the news is not good.
The EU wants to ban fishing below 600m, but the scientific case doesn't stand up.
How will climate change affect life in the oceans? New research shows that the answer is likely good and bad.
The Great Southern Reef covers 71,000 square km and contributes more than A$10 billion to Australia's economy each year.
Over the past 80 years sardine and anchovy have become icons of modern-day marine biology, oceanography and climate research.
Spreading fishing pressure evenly across whole marine ecosystems sounds like a great idea. But there's a hitch – we can't technologically do it, and even if we could, it would be expensive.