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Artículos sobre Oceans

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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…
The day after: a Sri Lankan man begins the slow process of rebuilding. EPA/Mike Nelson

Ten years after the Boxing Day tsunami, are coasts any safer?

Ten years ago we witnessed one of the worst natural disasters in history, when a huge earthquake off the coast of Sumatra triggered a devastating tsunami which swept across the Indian Ocean. An estimated…
RV Investigator at sea – It will be formally commissioned in Hobart today. CSIRO

Explainer: the RV Investigator’s role in marine science

We know more about the surface of the moon than we do about our deepest oceans, and only 12% of the ocean floor within Australia’s Exclusive Economic Zone has so far been mapped. The reason for this is…
Warmer waters heading south – here’s sunrise off Manly in New South Wales. Flickr/Jeff Turner

Things warm up as the East Australian Current heads south

Occasional erratic bursts southward of the East Australian Current (EAC) are thought to have moderated the weather of south-east Australia this autumn and winter and they continue to introduce tropical…
Marine parks need to be big enough to safeguard wide-ranging species, like the sharks being studied here. Manu San Felix/National Geographic Pristine Seas Expedition

Now is our chance to deliver on the 30% ocean protection target

Top scientists, senior government managers, industry representatives, conservationists and even some nations’ presidents are currently in Sydney for the World Parks Congress. This major international meeting…
Coral reef ecosystem off Palmyra Atoll part of newly expanded Marine National Monument. Jim Maragos/U.S. Fish and Wildlife Service

Pacific Remote Islands protection not just a drop in the ocean

This fall, President Obama signed a proclamation that created the biggest marine reserve in the world. By extending the protective boundaries around Wake Island, Jarvis Island and Johnston Atoll from 50…
Apollo Bay in Victoria. Australia’s coastal towns are vulnerable to changes in the surrounding seas. ccdoh1/Flickr

Your coastal town’s climate score? There’s a website for that

Australia’s coastal towns, many built around fisheries and tourism, are particularly vulnerable to climate change. South east and south west Australia are marine hotspots — they are warming much faster…
A king tide in New Zealand, part of a project documenting what future sea level rise might look like. Witness King Tides/Flickr

15 years from now, our impact on regional sea level will be clear

Human activity is driving sea levels higher. Australia’s seas are likely to rise by around 70 centimetres by 2100 if nothing is done to combat climate change. But 2100 can seem a long way off. At the moment…
Bet you wouldn’t find this on Mars. EPA

Just how little do we know about the ocean floor?

As ships resume the search for missing Malaysian Airlines flight MH370 in the depths of the Indian Ocean this week, we often hear that the oceans are “95% unexplored” and that we know more about the surface…
Shark Bay is one of Australia’s 19 World Heritage Areas, home to dolphins, dugongs, and sharks. Matthew Fraser

Climate change threatens Western Australia’s iconic Shark Bay

In the summer of 2010-2011 Western Australia experienced an unprecedented heatwave — but not on land. Between December 2010 and April 2011, sea temperatures off the WA coast reached 3C above average, and…

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