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Inventing an “easy button” for ocean acidification measurements

Measuring ocean acidification is tough — we can’t see it, and we have to use specialized instruments to measure it properly. Scientists use specialized laboratories to make the most accurate chemistry measurements of deep ocean waters. Worse, even the most affordable instruments to get this data still costs tens of thousands of dollars. This makes […]

The Glow on the BayWhy are those lighted boats on Monterey Bay...

The Glow on the Bay Why are those lighted boats on Monterey Bay at night in summer? Market squid are here! Commercial squid fishers use bright electric lights to lure these cagey cephalopods to the surface. Large purse seiners quickly encircle the concentrated schools and haul them aboard. Show More Summary

Ocean warming ameliorates the negative effects of ocean acidification on Paracentrotus lividus larval development and settlement

Ocean warming and acidification both impact marine ecosystems. All organisms have a limited body temperature range, outside of which they become functionally constrained. Beyond the absolute extremes of this range, they cannot survive. Show More Summary

Environmental controls on the genesis of marine microbialites and dissolution surface associated with the end-Permian mass extinction: new sections and observations from the Nanpanjiang Basin, South China

A widespread marine microbialite and underlying truncation surface occur in Permian–Triassic sections of South China. We interpret the microbialite to have formed as a shallow, open-marine benthic framework stimulated by high seawater CaCO3 saturation. Show More Summary

A face only a mother could love The wolf eel...

A face only a mother could love  The wolf eel (Anarrhichthys ocellatus) is a memorable animal. Once you see its smushy mug, you won’t forget that face. Here at the Aquarium you’ll find them in the Kelp Forest and Lingcod/Wolf Eel exhibits, as well under the Kelp Touch Pool. Show More Summary

Ocean acidification affects productivity but not the severity of thermal bleaching in some tropical corals

Increasing carbon dioxide (CO2) emissions are raising sea surface temperature (SST) and causing ocean acidification (OA). While higher SST increases the frequency of mass coral bleaching events, it is unclear how OA will interact to affect this process. In this study, we combine in situ bleaching surveys around three tropical CO2 seeps with a 2-month […]

Impact of river discharge on the coastal water pH and pCO2 levels during the Indian ocean dipole (IOD) years in the western bay of Bengal

Monthly variations in inorganic carbon components during January 2010-December 2011 in the coastal Bay of Bengal (BoB) were studied in relation to the variations in Godavari River (GR) discharge using ship board measurements, buoy data and satellite remote sensing data. Higher GR discharge was observed during the 2010 monsoon (1133 m3 s?1) resulting in low salinity […]

The world is watching! Our latest podcast takes you behind the...

The world is watching! Our latest podcast takes you behind the scenes with PBS and BBC for a preview of the unprecedented live natural history TV event airing in August–Big Blue Live!  Listen now

Videobomb! Sharks steal the show from a school of sardines in...

Videobomb! Sharks steal the show from a school of sardines in our Open Sea exhibit. Want to see more? Check out our live cam.

Benthic megafauna and CO2 bubble dynamics observed by underwater photography during a controlled sub-seabed release of CO2

In 2012, a controlled sub-seabed release of carbon dioxide (CO2) was conducted in Ardmucknish Bay, a shallow (12 m) coastal bay on the west coast of Scotland. During the experiment, CO2 gas was released 12 m below the seabed for 37 days, causing significant disruption to sediment and water carbonate chemistry as the gas passed up through […]

Impact and recovery of pH in marine sediments subject to a temporary carbon dioxide leak

A possible effect of a carbon dioxide leak from an industrial sub-sea floor storage facility, utilised for Carbon Capture and Storage, is that escaping carbon dioxide gas will dissolve in sediment pore waters and reduce their pH. To quantify the scale and duration of such an impact, a novel, field scale experiment was conducted, whereby […]

Impact of sub-seabed CO2 leakage on macrobenthic community structure and diversity

A sub-seabed release of carbon dioxide (CO2) was conducted to assess the potential impacts of leakage from sub-seabed geological CO2 Capture and Storage CCS) on benthic macrofauna. CO2 gas was released 12 m below the seabed for 37 days, causing significant disruption to sediment carbonate chemistry. Regular macrofauna samples were collected from within the area of […]

Modelling large-scale CO2 leakages in the North Sea

A three dimensional hydrodynamic model with a coupled carbonate speciation sub-model is used to simulate large additions of CO2 into the North Sea, representing leakages at potential carbon sequestration sites. A range of leakage scenarios are conducted at two distinct release sites, allowing an analysis of the seasonal, inter-annual and spatial variability of impacts to […]

Response of the ammonia oxidation activity of microorganisms in surface sediment to a controlled sub-seabed release of CO2

The impact of a sub-seabed CO2 leak from geological sequestration on the microbial process of ammonia oxidation was investigated in the field. Sediment samples were taken before, during and after a controlled sub-seabed CO2 leak at four zones differing in proximity to the CO2 source (epicentre, and 25 m, 75 m, and 450 m distant). The impact of […]

Dissolution, ocean acidification and biotic extinctions prior to the Cretaceous / Paleogene (K/PG) boundary in the tropical Pacific

The several million years preceding the Cretaceous/Paleogene (K/Pg) boundary has been the focus of many studies. Changes in ocean circulation and sea level, extinctions, and major volcanic events have all been documented for this interval. Important research questions these changes raise include the climate dynamics during the warm, but not hot, time after the decay […]

MBARI team earns XPRIZE to measure ocean acidity (text & audio)

Burning fossil fuels dumps excess carbon dioxide into the atmosphere, causing global warming and increasing acid levels in the ocean. Scientists call ocean acidification “the other CO2 problem.” Teams from around the world competed for the Wendy Schmidt Ocean Health XPRIZE to build the best sensor to measure acid levels, also known as pH. On […]

7-27-25 Call To Action

Your phone calls to Obama are needed to let him know people care and support this effort. Call now. Tell everyone you know to call!

The West Coast Ocean Acidification and Hypoxia Science Panel, Public workshop, Sacramento, 29 July 2015

Date & time: Wednesday, 29 July 2015, 10:00 to 11:30 AM Location: Environmental Protection Agency, Klamath Training Room, 1001 I Street, Sacramento, CA 95812 Ocean acidification and hypoxia, often coupled due to biological and oceanographic processes, have the potential for profound impacts to marine and coastal environments. Show More Summary

Missoula’s Sunburst sensors wins XPRIZE for ocean device

MISSOULA, Montana – Sunburst Sensors LLC, a company resulting from University of Montana research, won $1.5 million in XPRIZE funding on July 20 for producing the best device to affordably, accurately and efficiently measure ocean chemistry. The Missoula team won two $750,000 grand prizes – one for affordability and one for accuracy – during the […]

Ever wonder what the world looks like from the kelp forest? See...

Ever wonder what the world looks like from the kelp forest? See for yourself this #SeaweedSunday! Staffer Patrick Webster captured this spectacular shot of giant kelp and the Aquarium at sunset.

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