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But I didn’t do it on porpoise, your honour. jidanchaomian

Grey seals in the dock over porpoise murder mystery

It’s one of the big mysteries in my career as a marine biologist. Something lurking in the seas off Britain has been chomping away at local porpoises and none of the usual suspects fit the bill. Now scientists…
Young Steller sea lions in Prince William Sound, Alaska. NMFS Permit 14336. Markus Horning

Autopsies from space: who killed the sea lions?

A decade ago, we set out to unravel deep ocean crime scenes we weren’t even sure existed. The crime? Endangered Steller sea lions were rapidly disappearing in parts of Alaska. Their numbers dropped by…
Antarctica has actually been protected from sea ice melt by the ozone hole. Vassil Tzvetanov

The ozone hole leaves a lasting impression on southern climate

Many people think of sunburn and skin cancer when they hear about the ozone hole. But more ultraviolet (UV) radiation isn’t the only problem. The ozone hole has also led to dramatic changes in Southern…
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…
About 18% of the world’s seagrass stocks have disappeared over 20 years. Richard Unsworth

For the love of cod, let’s save our disappearing seagrass

Seagrass is one of the most important coastal habitats where young ocean-going fish such as Atlantic cod can grow and develop before setting out on the journey of life. But these critically important habitats…
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…
Australia’s Commonwealth marine parks were designed to protect marine life, including important foraging areas for sea birds.

Marine park review looks set to repeat past mistakes

In June 2012 the Labor government announced the “world’s largest” system of marine parks, adding 2.3 million square kilometres and taking the overall size of Australia’s Commonwealth marine reserves to…
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…
Not the sort of coastal effects you can sweep under the rug. Jian Feng

China’s economic explosion is ravaging its coastal ecosystems

The speed and scale of China’s rapid economic growth has led to widespread degradation of its densely inhabited coastlines, according to an analysis of 60 years of social, economic and environmental data…
Phytoplankon: blooming marvellous. Norman Kuring

Saharan dust feeds the ocean and locks away carbon too

The Saharan dust that clogged air and dirtied cars recently may seem like a nuisance, but in fact contains some essential nutrients – if, that is, you’re phytoplankton. The dust and sand blown from Africa…
Cod: in search of cold waters. August Linnman

Fish may end up in hot water as climate warms the ocean

The rate at which the world has warmed over the past 50 years and is likely to continue to do so in the future poses problems for life on land and in the ocean. Most species have a defined range of temperatures…
While we don’t know much about oceans off north west Australia, we know they’re important. Australian Institute of Marine Science

Marine reserves: finding the balance with oil and gas

How do we get the most out of our marine reserves? The government is in the process of reviewing Australia’s network of marine protected areas. The review focuses on zones that exclude recreational fishers…

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