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Articles on Oceans

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Acehnese fishers are among the quarter of the world’s population who live on the coast, and for whom climate-driven changes to the oceans would make life much harder. Hotli Simanjuntak/EPA/AAP Image

New report: the chance to rescue the world’s oceans from climate change is drifting away

Failing to stick to the world’s agreed global warming limit of 2C won’t just affect the atmosphere - it will play havoc with the oceans too, potentially ruining ecosystems on which much of humanity depends.
Satellite image showing clouds over the Greenland Sea downstream of the ice edge during conditions where there was a large transfer of heat and moisture from the ocean to the atmosphere. NASA

Declining winter sea ice near Greenland spells cooler climate for Europe

Loss of sea ice near Greenland and Iceland portend a colder future for Europe.
OK, but which sea’s level? And how do you know what it is? Wally Gobetz

Explainer: how do you measure a sea’s level, anyway?

The tides come in, the tides come out. But what is a sea’s level? Technology has evolved since we first started gauging the height of the ocean in comparison to the land.
Out of sight out of mind? The vast majority of global warming is going into the ocean. peter dondel/Flickr

The climate ‘hiatus’ doesn’t take the heat off global warming

Over the past decade, warming air temperatures at Earth’s surface appear to have slowed. But that ignores the vast majority of heat going steadily into the ocean. And, a new paper shows, that makes no difference to the long-term prognosis.
Marine parks are valuable tools to help safeguard species such as seagrasses. AAP Image/James Cook University

Why are Australia’s marine parks being reviewed so soon after they were signed off?

Australia’s network of marine parks - a decade in the making and announced in 2012 - haven’t been implemented yet, and the Abbott government has already placed the plans under review. Why the hurry?
Despite the high concentration of sharks in Cocos, some species have declined in number – a signal on the effectiveness of marine preserves. Genna Marie Robustelli

Shark-counting divers off Costa Rica reveal limits of marine reserves

Divers at the famed Cocos site off Costa Rica record declines in a number of shark species – a sign that marine preserves are limited protection against illegal fishing.
A huge float called an ‘actuator’ is lowered into the water off the Perth coast. AAP Image/Carnegie Wave Energy

Surf’s up – can wave energy rise to the challenge in Australia?

Australia’s first large-scale wave energy project is online off the coast of Perth. As Hugh Wolgamot writes, it’s a promising development, but technological challenges remain.
Kelp covered landscape in Western Australia. Dan Smale

Marine heatwaves threaten the future of underwater forests

Western Australia’s marine environment is unique. Two world heritage areas, the largest fringing coral reef in Australia, and more than a thousand kilometres of underwater forests, supporting incredible…
Turtles are among the species that could be harmed by dredging, even under the government’s new dredge dumping rules. AAP Image/University of QLD

Six ways Australia is selectively reporting to the UN on the Great Barrier Reef

The Australian government’s latest report on the Great Barrier Reef, submitted to the UNESCO World Heritage Centre last Friday, has been carefully crafted and word-smithed, with many of its claims supported…
Researchers deploy robotic Argo floats into the ocean to measure temperature. CSIRO

Ocean depths heating steadily despite global warming ‘pause’

The oceans are continuing to warm steadily despite an apparent slowdown in global warming at the earth’s surface, according to data collected by thousands of floating robots published today in Nature Climate…

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