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A new research expedition is documenting the deep-sea denizens of the Perth Canyon, such as this flytrap anemone and basket star. UWA/Schmidt Ocean Institute

We are finally learning the Perth Canyon’s deep-sea secrets

The Perth Canyon, off Australia's west coast, is twice the size of the Grand Canyon. But only now, with the help of remote-controlled submarines, are researchers finding out what lives in its depths.
After mass bleaching in 1998, more than half of coral reefs in the Seychelles have slowly recovered. Nick Graham

Obituaries for coral reefs may be premature, study finds

Coral reefs are the poster child for the damage people are doing to the world’s oceans. Overfishing, pollution and declining water quality have all taken their toll on reefs around the world. Perhaps the…
Bright colourful coral like this may soon disappear. USFWS Pacific

Global warming’s evil twin: ocean acidification

Greenhouse gas emissions have warmed the oceans in regions such as the Baltic by as much as 1.3°C. It is now thought that 90% of the heat added to the climate system by humans has been absorbed in the…
A fire coral and friends, Millepora intricata in a lagoon on the Great Barrier Reef. Mike Emslie and Daniela Ceccarelli

Australian endangered species: Fire corals

The fire coral (Millepora boschmai) is one of the rarest species of coral in the world. It is known only from a small number of locations in the Pacific Ocean, Panama and Indonesia, and it appears this…
The new findings show that long term geological processes influence global coral diversity patterns more than the environment. AAP Image/Nick Thake

How earthquakes and volcanoes shape coral diversity

Earthquakes, volcanoes and movement of the Earth’s tectonic plates influence coral diversity patterns more than short-term…
Air pollution has been found to have affected coral growth in the Caribbean over many decades. Lester Kwiatkowski, University of Exeter

Air pollution casts a cloud over coral reef growth

Tiny particles of air pollution can stunt the growth of coral reefs, according to a new study in Nature Geoscience. Using…
Recent research shows an acidifying ocean is more damaging to coral than we’d hoped. Community Eye Health

Jumps in ocean acidity put coral in more peril

Ocean acidification - where the ocean becomes less alkaline as it absorbs excess CO2 from the atmosphere - has been described as the evil twin of global warming. Yet, remarkably, it is only over the past…
Everyone wants good news about coral, but we shouldn’t misinterpret the latest findings. Phil Camill

Research good news for coralline algae, but not necessarily for reefs

As Doha disappoints on delivering any real progress on reducing global CO2 emissions, new research demonstrates that a key component of coral reef structures may be more resilient in the face of increasing…
A high level of coral cover doesn’t always mean a high level of species diversity; and diversity is important. Maria Beger

A lot of coral doesn’t always mean high biodiversity

The health and productivity of coral reefs is rapidly declining. Hard corals are the principal builders of coral reef ecosystems; however they are struggling to survive due to pollution, catchment clearing…
The Great Barrier Reef may be huge and long-lived, but without intervention it’s in serious trouble. Landfeldt/Flickr

The decay of the Great Barrier Reef calls for a reckoning

There is a myth about Australia’s Great Barrier Reef, that goes like this: because it is so big, biodiverse, so well-managed and generally bloody awesome, the GBR is immune to climate change and other…
We thought we’d set a safe limit on climate change - 450ppm CO2 - but it may be too high for most of the world’s reefs. Paul Toogood

Climate change guardrail too hot for coral reefs?

One of the ambitions of the United Nations Framework Convention on Climate Change (UNFCCC) is galvanising the international community to avoid dangerous interference with Earth’s climate. To do this, it…
Little penguins are among a number of species that are threatened by climate change. AAP/Rick Stevens

Ocean winners and losers revealed in Marine Report Card

Fish are on the move in Australia’s waters. In southern Australia, scientists, commercial and recreational fishers, divers and beach-goers are reporting the presence of new species. The movement of species…
Coral species Acropora monticulosa is becoming more abundant at the Solitary Islands in northern NSW.

On the move: corals migrate south into NSW’s warming waters

The east coast of Australia is a global hotspot for the effects of climate change, especially in the marine realm, where average water temperatures have increased by almost half a degree over the last…

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