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oceans: 25/50 of 227
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Cancún's mangroves are destroyed. But hope grows again!

Miguel Rivas / Greenpeace Mexico

17th February 2016

Mexico's tourist resort of Cancún has just lost one of its greatest natural riches, writes Miguel Rivas: 57 hectares of species rich mangrove forest, bulldozed in a massive overnight attack by property developers in league with local officials. But people power can still win the battle and see the Tajamar mangroves restored. more...
Cruising the open seas on the Sea Dragon. Photo: Katrina McQuail.

In search of the unseen: an investigation into plastics in our oceans

Ana Stanič

21st February 2-16

One of the biggest threats facing marine life is the 'microplastic' particles found in ocean ecosystems from bottom to top of food chains. Just back from a voyage of environmental exploration in the tropical Atlantic sampling the waters to build up a global picture of this ubiquitous pollutant, Ana Stanič writes of the joys and trials of life on the waves, and the need to keep our oceans clean. more...
Beached whale in the Firth of Forth, Scotland, being removed using earth-moving equipment, September 2013. Photo: Patrick Down via Flickr (CC BY-NC).

Heavy metal poisoning in Scotland's beached whales

The Ecologist

15th February 2016

High levels of toxins mercury and cadmium have been found in all organs of the whales recently beached on Scotland's North Sea coast, including the brain. The research shows that rising mercury levels in the oceans leads to toxic stress in the long-lived marine mammals. more...
In the foreground a plesiosaur, and the left an ichthyosaur, feature in this reconstruction of a Cretaceous ocean in the National Museum of Scotland, Edinburgh. The absence of oxygen in deeper waters led to the preservation of the fossil riches we enjoy t

Ancient 'dead seas' offer a stark warning for our own future

Richard Pancost, University of Bristol

29th January 2016

For long periods animals in ancient oceans could live only in shallow surface waters, above vast 'dead zones' inhabited only by anoxic bacteria, writes Richard Pancost. Human activity is now creating immense new dead zones, and global warming could be helping as it reduces vertical mixing of waters. Could this be the beginning of something big? more...
Children playing on a 'plastic beach' at the mouth of Versova Creek near Mumbai - an area formerly home to large tracts of mangroves and Great Egrets. Photo: Ravi Khemka via Flickr (CC BY).

Humans will be remembered for leaving a 'plastic planet'

Oliver Tickell

28th January 2016

Long after we go extinct the human presence on Earth will be marked by a geological stratum rich in plastic garbage, according to a new study. Long-lived plastics are already widespread over the ocean floor, and there's a lot more on its way. Forget the 'Anthropocene' - the human era should rightly be called the Plasticene. more...
The Pacific Egret, with its small naval cannon visible, left and right, on its rear deck. Left, its companioin vessel, the Pacific Heron. Photo: Cumbrians Opposed to a Radioactive Environment via Facebook.

Too much of a bad thing? World awash with waste plutonium

Paul Brown

24th January 2016

As worldwide stocks of plutonium increase, lightly-armed British ships are about to carry an initial 330kg of the nuclear bomb metal for 'safekeeping' in the US, writes Paul Brown. But it's only the tip of a global 'plutonium mountain' of hundreds of tonnes nuclear power's most hazardous waste product. more...
Frozen tuna at the early morning fish auction at the Tokyo Fish Market. Many of the tuna sold here are of endangered species such as bluefin and bigeye. Photo: Scott Lenger via Flickr (CC BY-NC-ND).

Oceans running out of fish as undeclared catches add a third to official figures

Christopher Pala

19th January 2016

The global catch of fish and seafood is falling at three times the rate reported by the United Nations and urgently needs to be slowed to avoid a crash, reports Christopher Pala. The finding comes in a new study for Nature which quantifies the huge illegal industrial fish pillaging taking place around the world, together with artisanal catches, which in 2010 added over 50% to UN estimates. more...
Otters waiting for fish at Loch Creran, West Highlands, Scotland. Photo: Jennie Rainsford via Flickr (CC BY-SA).

Connecting with nature through wildlife, place and memory

John Aitchison

19th January 2016

Some of us are fortunate enough to have close relationships with the nature around us, writes John Aitchison. But what about everyone else? We must find ways to make people feel like old friends with wildife near and far, and feel that their wild homes and habitats are extensions of our own. And hence, that they are as deserving of our care as human neighbours - if not more so. more...
Drawing in the catch. Photo: Lummi Island Wild.

Sustainable fishing: sockeye salmon and Native American nets in the Pacific Northwest

Kevin Bailey

3rd January 2015

A salmon fishing cooperative in the Pacific Northwest draws on indigenous practices and state of the art technology to be among the world's most sustainable and selective fisheries, writes Kevin Bailey. With its clean harvesting techniques, minmimal bycatch, 99% survival rates for released fish, renewable energy supply and efficient supply chain, it sets a standard for all to follow. more...
Jellyfish shall inherit the ocean ... if we keep on acidifying it. Photo: Stuart Chalmers via Flickr (CC BY-NC).

Attack of the stinging jellyfish: the winners of ocean acidification

Jason Hall-Spencer, Plymouth University

16th December 2015

Rising levels of carbon dioxide don't just cause global warming, writes Jason Hall-Spencer. Another consequence is acidifying oceans - which promises to disrupt marine ecology around the world, killing off oysters and corals, while boosting 'nuisance species' like stinging jellyfish. more...
Coccolith. Photo: ZEISS Microscopy via Flickr (CC BY-NC-ND).

COP21 warned on global warming's evil twin - acidifying oceans

Tony Juniper

3rd December 2015

Increased atmospheric CO2 is doing much more than warming the Earth, writes Tony Juniper - it's also acidifying oceans, something that is already having major impacts on ocean ecology in the Southern Ocean and the North Atlantic. Likely effects: more CO2 in the atmosphere, more jellyfish. more...
Orca watching in Puget Sound with Jim Maya. Photo: Robbert Michel via Flickr (CC BY-NC-ND).

Sewage treatment essential to save Puget Sound orcas

Dr. Sierra Rayne

20th December 2015

Orcas from Puget Sound and the Strait of Georgia are under threat,in large part due to toxic organic compounds in the marine food chain, writes Sierra Rayne. To give them a fighting chance, the nearby community of Victoria, British Columbia must install advanced sewage treatment - rather than just dump its wastewater largely untreated into the orcas' ocean home. more...

oceans: 25/50 of 227
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Dulse growing on kelp as an epiphyte: a feast fit for a king. Photo, Fiona Bird.

Seaweed on the shore, seaweed in the kitchen

Fiona Bird

26th November 2015

Fresh or dried wild seaweed may be on sale in a supermarket near you, writes Fiona Bird. But much better than supporting what may be unsustainable harvesting, gather your own at low tide on rocky shores, picking just enough for your needs. Once a poverty food, seaweed is now a sought after ingredient that expresses the 'fifth taste', umami. more...
DCNS and Nass&Wind designed this 'Winflo' floating wind turbine.

With floating platforms, offshore wind cost set to plunge

Paul Brown

11th November 2015

Floating wind turbines offer huge falls in the cost of offshore wind power, writes Paul Brown, and could be generating power in UK waters at well under the cost of new nuclear by 2020, provided adequate support. more...
Ice may be breaking off the Antarctic's sea shores, but in its vast centre, ice mass is growing three times faster. Photo: Glacier in Penola Strait, Antarctica, by Liam Quinn (CC BY-SA).

NASA: mass gains of Antarctic ice sheet exceed losses

Maria-José Viñas / NASA

4th November 2015

Antarctic glaciers are famously losing ice around the margins of the continent, writes Maria-José Viñas. But a new study from NASA shows that those losses are offset three times over by ice thickening in central Antarctica, causing sea levels to drop. However the net ice gain may run of steam in coming decades. more...
Floods in Dhaka, Bangladesh, in 2004. 17% of the country may be permanently inundated by rising seas by 2050, displacing 18 million people. Photo: dougsyme via Flickr (CC BY).

Earthquakes, superstorms ... and other little-known perils of climate change

Matthew Blackett / Coventry University

2nd November 2015

Climate change will impact the world in many ways, writes Matthew Blackett. Some of them may be good, like more rain in African drylands and coral atolls adapting to rising seas. But most of them - like coastal flooding, long term drought, earthquakes and stronger tropical storms - will be very challenging. We must increase the resilience of the most vulnerable countries without delay. more...
Southern Resident Orca near East Point, Saturna Island, 12th July 2011. Photo: Miles Ritter via Flickr (CC BY-NC-SA).

'Fragile Waters': we must stop starving Southern Resident Orcas to extinction

Kathleen Haase

24th November 2015

The Southern Resident Orcas of Puget Sound have plenty of problems, writes Kathleen Haase. But as the film 'Fragile Waters' makes clear, there's a common thread: us. Whether it's over-fishing Chinook salmon or polluting the ocean with toxic chemicals, we are driving them to extinction - and if we don't soon mend our ways, it will be too late. more...
A bamboo-net FAD on Farquhar Atoll, Seychelles. Photo: ICS.

Time to curb FADs, the tuna industry's floating atoll destroyers

Dr Cat Dorey / Greenpeace

14th October 2015

Declining tuna stocks are not the only consequence of an out-of-control tuna industry, writes Cat Dorey. A major tuna fishing method used in tropical seas is causing serious damage to coral reefs and attracting a huge 'bycatch' of sharks and other species. Now responsible producers and retailers are taking matters into their own hands - and you can help! more...
Nurdles found on the beach near Newquay in recent weeks. Photo: Tracey Williams / Rame Peninsula Beach Care.

Millions of plastic pellets contaminate Cornwall beaches

The Ecologist

5th October 2015

Cornish beaches are awash with millions of 'nurdles', tiny wildlife-choking plastic pellets presumed spilled from an rogue shipping container. As England's plastic bag charge comes into force, it's a sign that there's still a long way to go to rid our seas of the plastic menace. more...
Easter Island butterfly fish are one of at least 140 species endemic to the regions waters. Photo: Eduardo Sorenson, The Pew Charitable Trusts (CC BY-SA).

Easter Island is the perfect spot for a marine reserve

Callum Roberts

12th October 2015

Chile's announcement of a 630,000 sq.km marine protected area around Easter Island is altogether welcome, writes Callum Roberts. It forms part of a trend of very large marine reserve declarations that will play a vital role in preserving endangered fish stocks and vital oceanic biodiversity. more...
Killer Whales in Monterey Bay, California - helping to sequester the carbon emissions from those smokestacks in the background. Photo: © John Krzesinski 2012 via Flickr (CC BY-NC-ND).

Predators keep the oceans' carbon pump ticking

Peter Macreadie, Euan Ritchie, Graeme Hays & Trisha B Atwood

29th September 2015

By keeping marine herbivores in check, predators from sharks to crabs are essential to keep the oceanic 'carbon pump' working - with seaweed and plankton fixing atmospheric carbon and bearing it down to deep waters and sediments before getting munched. It's time to give ocean predators the protection they deserve, for climate's sake. more...
Burn all our fossil fuels, and all the ice in Antarctica will melt, causing sea levels to rise 58m. The Ellsworth Range in Antarctica as seen from the IceBridge DC-8, 22nd October 2012. Photo: NASA Goddard Space Flight Center (CC BY).

Let fossil fuels rip for an ice-free Antarctica

Tim Radford

18th September 2015

Scientists warn that burning up the planet's remaining fossil fuel would cause all Antarctic ice to melt and lead to 58m of sea level rise over 10,000 years, writes Tim Radford. But devastating impacts would strike much sooner, with oceans rising by 3m a century for the next millennium. more...
Beautiful but deadly: a golden sunset over the Pacific at Naraha, Fukushima, Japan. 'Scenery of Tears' Photo: Mirai Takahashi via Flickr (CC BY-NC-ND).

Fukushima: Japanese government and IAEA ignore radiation risks to coastal population

Tim Deere-Jones

28th September 2015

Radiation can be carried long distances by marine currents, concentrated in sediments, and carried in sea spray 16km or more inland, writes Tim Deere-Jones. So Fukushima poses a hazard to coastal populations and any who eat produce from their farms. So what are the Japanese Government and IAEA doing? Ignoring the problem, and failing to gather data. more...
Fishing in Ayungon, Philippines, among the many places in developing countries where local fishing provides protein and livelihood. Photo: Rare (CC BY).

Local fishing rights + marine reserves are key to small-scale fisheries recovery

Jane Lubchenco & Steven Gaines

29th December 2015

There is a simple formula for restoring life to over-exploited coastal fisheries, write Jane Lubchenco & Steven Gaines, and it has been proven to work from the Philippines and Indonesia to Mexico and Belize: to create local marine reserves for the exclusive use of local fishing communities. more...
Felled tree in the coastal rainforest of Oregon, USA. Photo: Francis Eatherington via Flickr (CC BY-NC-ND).

Biosphere collapse: the biggest economic bubble ever

Glen Barry

14th September 2015

Worried about debt, defaults and deficits? Save up your concern for the real problem, writes Glen Barry. The systematic destruction Earth's natural ecosystems for short-term profit is the 'bubble' that underlies economic growth - and if allowed to continue its bursting will leave the Earth in a state of social, economic and ecological collapse. more...

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