Climate change will affect the nutrition of seaweeds eaten by billions of people around the world.
Many Caribbean reefs are now dominated by sponges.
Marine sponges are ancient organisms that have survived mass extinctions. Many are more tolerant of climate change and may dominate over corals in future reef systems.
Researchers studied reef sands at Heron Island, Hawaii, Bermuda and Tetiaroa. In this photo, white areas show the predominance of sand on reefs.
Southern Cross University
Ocean acidification poses an increasing threat to the sediments that form the framework of coral reefs - within around 30 years, these carbonate sands may no longer be able to form.
Giant triton molluscs are a useful ally in battling the coral-grazing crown-of-thorns starfish.
AAP Image/AIMS, K Goodbun
The federal government's new funding aims to spread the net wide in investigating possible ways to protect the Great Barrier Reef's corals. Winning this battle will require a wide range of weapons.
A tank can give a good idea of what will happen out in the wild.
A new study suggests the benefits of a boost to marine plant growth from increased carbon dioxide will be cancelled out by the increased stress to fish species.
IPSO's latest ruling makes a mockery of journalism's commitment to seeking the truth.
A massive fish die-off occurred in Redondo Beach, California in 2011 caused by oxygen-starved fish.
Warming waters due to climate change are losing oxygen, threatening the health of fish and ecosystems.
The second-noisiest animal in the ocean, the snapping shrimp.
Dr Tullio Rossi
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.
Live crab at a Seattle market.
Global climate change is altering the chemistry of the oceans. A recent study suggests that the Pacific coast's lucrative Dungeness crab fishery could suffer as ocean water becomes more acidic.
Atmospheric, marine, environmental, biological and medical scientists join in calling for more focus on the damage being wrought by climate change.
A bloom of phytoplankton in the Barents Sea: the milky blue colour strongly suggests it contains coccolithopores.
Wikimedia/NASA Earth Observatory
Tiny organisms change ocean acidity to benefit themselves.
Dan Lee / shutterstock
'Smell-free seas' would be a disaster for marine life.
Nice to see you: parrotfishes prey on seaweed, which consume seaweeds that can outcompete, smother or even poison corals.
A combination of factors – pollution, disease and overfishing – is harming corals but scientists have found clues to effective treatment by studying corals' microbiome.
South Africa’s oceans offer numerous economic opportunities, if ocean acidification is dealt with properly.
South Africa has the opportunity to benefit from its ocean economy. But to do that, the country needs to put better policies in place to counter ocean acidification.
Don’t dismiss what science has to say about the fate of coral reefs.
Marine scientists have been accused of being biased towards 'doom and gloom'. But it's not bias if the outlook for coral reefs really is gloomy.
Corals grow better in the more alkaline ocean conditions that existed in pre-industrial times.
By artificially going 'back in time' to more alkaline ocean conditions, researchers have shown the damage that ocean acidification is already doing to the Great Barrier Reef.
The Great Barrier Reef is made up of thousands of individual reefs.
NASA Goddard Space Flight Center/Flickr
Ocean acidification will hurt some parts of the Great Barrier Reef more than others.
Adult corals need a good developmental start to establish themselves on the reef.
Anders Poulsen/Wikimedia Commons
Without action to curb the rising acidity of our seas, corals will start to develop deformed skeletons at a crucial young stage of their lives.
The mussel hustle.
Shellfish will have more brittle shells as oceans get more acidic – making them more vulnerable to predators. New research gives a fascinating glimpse into how they will adapt.
Jelly invasion: is this a vision of the future for our oceans?
We know a lot about the potential negative effects of ocean acidification on marine creatures. But might some species actually benefit? The answer is yes, but this isn't necessarily a good thing.