A new large-scale, multidisciplinary ocean exploration program would increase the pace of discovery of new species - ecosystems, energy sources, seafloor features, pharmaceutical products, and artifacts, as well as improve understanding of the role oceans play in climate change.

The ocean plays a critical role in climate and weather, serving as a massive reservoir of heat and water that influences tropical storms, El Nin~o, and climate change.

Joint statements from the national science academies of the G7 nations were released today in advance of the G7 Summit to be held in La Malbaie, Canada, on June 8 and 9, 2018.

The Gulf Research Program of the National Academies of Sciences, Engineering, and Medicine today announced a new collaboration with Shell and others to provide $1 million in funding support for a pilot effort to convert an existing ocean mooring owned by Shell into the first long-term deep ocean observatory in the Gulf of Mexico.

Representatives from the national academies of sciences of the G20 countries handed over recommendations for improving marine conservation to the Japanese Prime Minister Shinzo Abe.

Revelle Lecture Explores the Problem and Proposes Solutions

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A new study shows that the West Antarctic Peninsula is experiencing some of the most rapid climate change on Earth, featuring dramatic increases in temperatures, retreats in glaciers and declines in sea ice. The Southern Ocean absorbs nearly half of the carbon dioxide -- the key greenhouse gas linked to climate change -- that is absorbed by all the world's oceans. The study tapped an unprecedented 25 years of oceanographic measurements in the Southern Ocean and highlights the need for more monitoring in the region. The research revealed that carbon dioxide absorption by surface waters off the West Antarctic Peninsula is linked to the stability of the upper ocean, along with the amount and type of algae present. A stable upper ocean provides algae with ideal growing conditions. During photosynthesis, algae remove carbon dioxide from the surface ocean, which in turn draws carbon dioxide out of the atmosphere. From 1993 to 2017, changes in sea ice dynamics off the West Antarctic Peninsula stabilized the upper ocean, resulting in greater algal concentrations and a shift in the mix of algal species. That's led to a nearly five-fold increase in carbon dioxide absorption during the summertime. The research also found a strong north-south difference in the trend of carbon dioxide absorption. The southern portion of the peninsula, which to date has been less impacted by climate change, experienced the most dramatic increase in carbon dioxide absorption, demonstrating the poleward progression of climate change in the region.

Image credit: Drew Spacht/The Ohio State University

Researchers have found that ocean acidification leads to changes in the ways that clownfish normally respond to sound. As many species rely on hearing for orientation, habitat selection, avoiding predators and communication, ocean acidification could compromise auditory behaviour crucial for survival.

Mediterranean red coral (Corallium rubrum), already endangered due to over-harvesting, is likely to suffer still further under increasing ocean acidification as a result of rising CO2 emissions. Research has shown that under more acidic conditions the structural development of red coral skeletons is abnormal and growth rate is reduced.

Sharks aggregate in ‘hotspots’ in the North Atlantic Ocean and are at risk from overfishing by longliner vessels that target the same areas for fishing, a recent study has concluded. Researchers found that the shark and fishing-fleet ranges overlapped by 80% in the North Atlantic and call for international regulation of shark catches to protect at-risk shark populations.

A recent report has summarised what is currently known about the effects of ocean fertilisation as a climate change mitigation measure. The report highlights gaps in scientific understanding of the long term-effects of large-scale ocean fertilisation activities and raises questions about the effectiveness of the approach and the possibility of unintended impacts.

Coral and mollusc species with an outer layer of protective tissue are more able to withstand acidic seawater than some other species, according to a recent study. However, higher temperatures projected under climate change are likely to worsen the impact of ocean acidification on coral and molluscs, even affecting those that are otherwise resistant to higher levels of acidity.

Coral reef formation is already decreasing worldwide. A new study predicts that formation will drop to 60% of its natural rate if anthropogenic CO2 emissions continue to rise over the next century and keep acidifying the oceans.

Researchers have found that ocean acidification leads to changes in the ways that clownfish normally respond to sound. As many species rely on hearing for orientation, habitat selection, avoiding predators and communication, ocean acidification could compromise auditory behaviour crucial for survival.

The largest ice sheet in the world, the east Antarctic ice sheet, may succumb to climate change faster than thought, according to recent research. Warming ocean currents, triggered by shifting wind patterns, could accelerate melting of the ice sheet, leading to a rise in sea levels, say the researchers.

Ocean acidification may affect sharks’ sense of smell, causing them to avoid food, reports new research. In lab tests, the study found that sharks exhibited less feeding behaviour when they were kept in tanks of acidified seawater. These changes could pose a risk to the health of sharks, with knock-on effects for whole marine ecosystems.

Fishing in most of Norway’s counties is at ‘moderate’ to ‘high’ risk from ocean acidification, concludes a new study. The researchers reached this conclusion with the use of an integrated risk-assessment method that accounts for environmental, economic and social factors within the 19 counties. They call for immediate action to protect the fishing industry against the effects of ocean acidification.

Since the industrial revolution, the ocean has absorbed increased levels of carbon dioxide, leading to the ocean’s pH becoming more acidic. Effects of these pH changes on marine and estuarine biota is the focus of much research effort worldwide and the authors of this study focus on the larval habitat-choice process of a commercially important tropical marine fish species, Lates calcarifer, barramundi.

Ocean acidification threatens marine ecosystems worldwide, but economic assessments of its impact are lacking. A recent study has predicted the future cost of ocean acidification on mollusc production in Europe and showed that the highest economic impacts would be in France, Italy and Spain. For Europe overall, the annual damage could be in the region of €0.9 billion by 2100.

Researchers have found that ocean acidification leads to changes in the ways that clownfish normally respond to sound. As many species rely on hearing for orientation, habitat selection, avoiding predators and communication, ocean acidification could compromise auditory behaviour crucial for survival.

A new index for measuring the health of oceans considers the benefits of the sea to humans, as well as the status of natural components, such as biodiversity. According to the researchers who developed the index, it provides a powerful tool for allocating resources and improving policy in the management of marine ecosystems.

Ocean-energy technologies — which harvest renewable energy from the sea — will have a significant role to play in a future low-carbon society. A recent life-cycle analysis of different ocean-energy devices has found that life-cycle environmental impacts are caused mainly by the materials used in the mooring, foundations and structures. Improving the efficiency and lifespan of the devices, as well as improving mooring and foundations and deploying devices further out at sea, will help to further reduce the life-cycle environmental impact of ocean-energy systems, according to the study.

Future decades could see shifts in phytoplankton populations, leading to less diversity among phytoplankton strains in increasingly warm tropical oceans, researchers predict. These microorganisms play an important role in regulating the Earth's climate.

Increasing temperatures and rising ocean acidification could reduce the health and survival of young sharks, new research has shown. Bamboo shark embryos incubated under ocean temperatures and acidity predicted for 2100 showed survival rates of 80% compared to 100% survival under present-day conditions. Once hatched, survival measured at 30 days was only 44% for those under predicted climate change conditions, again compared to 100% for those experiencing current temperature and acidity.

The impact of ocean acidification — caused by increased carbon dioxide (CO2) emissions dissolving in sea water — on Atlantic cod larvae has been assessed in a new study. The researchers estimate that, under scenarios which might be reached at the end of the century, ocean acidification could double the mortality rate of cod larvae, reducing replenishment of juvenile fish into cod fisheries to 24% of previous recruitment.

In a new study, scientists have analysed the outcome of millions of barrels of oil and gas discharged into the Gulf of Mexico during the Deepwater Horizon disaster. By measuring changes in the composition of the fluid, scientists now have a better understanding of how pollution behaves in the deep ocean, to improve estimates of environmental impact.

A new modelling study has indicated that rivers could be the main pathway of mercury entering the Arctic Ocean. More research is needed to support this claim, but climate change could be increasing the release of mercury into rivers through thawing permafrost and increased wildfires.

Ocean acidification and eutrophication may affect the growth of microscopic algae - phytoplankton - with knock-on impacts for marine food chains and fisheries, warns a new study. By growing phytoplankton under different scenarios the researchers found that phytoplankton species are affected differently according to the acidity and nutrient content of the water.

Strong acids formed from shipping emissions can produce seasonal ‘hot spots’ of ocean acidification, a recent study finds. These hot spots, in ocean areas close to busy shipping lanes, could have negative effects on local marine ecology and commercially farmed seafood species.

Oxygen decline is occurring in many of the world’s oceans and has important consequences for marine ecosystems, but the causes are not fully understood. Aerosol pollutants may be partly responsible, according to a new study which modelled the effects of atmospheric pollution over the Pacific Ocean. The findings suggest that air pollution can exacerbate climate impacts on the ocean, even when the source is far away.

The cuts affected base payments by as much as 20 percent.

Eko Atlantic will be the modern face of Nigeria, for better or for worse.

These robotic labs, called ESPs, collect water samples in the open water and can determine if a beach is safe for swimming or water is clean enough to drink

An entire ecosystem living without light or oxygen flourishes beneath the ocean floor.

Deep in the ocean is a 'twilight zone' teeming with 1 million undiscovered species, yet fishing there isn't regulated.

The lead scientist for our Global Marine Team was there as the surge arrived in Santa Cruz. It was supposed to be 40 minutes of small waves. He explains why boa

Two documentaries revisit the 2004 disaster and explore how science has advanced since then.

The bottom of the Pacific Ocean is actually cooling down. How is this possible? The answer is proof that Earth's systems operate on long timescales.

Natural fluctuations alone do not explain warming in the upper layers of the planet's oceans, confirms a new computer modeling study.

As acidic seawater forces shellfish to grow thinner shells, scientists warn of a ripple effect that could alter marine ecosystems around the planet.

Did Japan hit the rare earth elements jackpot? Scientists have found undersea mud off the coast that could be packed with elements like yttrium, cerium and pras

American chemists are searching for new and resourceful ways to extract uranium from deposit-rich oceans in order to reduce the expensive mining process's cost.

"Ain't No Fish" is a stop-motion animated short film that uses a 1940s show tune to highlight ocean pollution.

We know plastic products pollution the ocean, but washing yoga pants, athletic wear and other clothes is a rising cause of concern.

The Ocean Cleanup is ready to launch plastic-eating System 001 to the Great Pacific Garbage Patch.

Four astronauts are spending 12 days underwater to prepare new methods for working in outer space. And they're Tweeting about it.

Using satellite data and machine learning, researchers have mapped the movements of over 70,000 industrial fishing vessels.

A '60 Minutes' investigation shows that the company that owned the Deepwater Horizon rig moved its headquarters to avoid paying taxes.

Death by acid was the fate of the sea monsters that perished in Earth's biggest mass extinction, some 251 million years ago.

By analyzing ear wax from a deceased blue whale, scientists gained clues to years of chemical exposure.