Marine water quality refers to the physicochemical, biological, and microbiological status of seawater as characterized by quantitative indicators relevant to ecosystem function, contaminant exposure, and regulatory standards. It encompasses parameters such as nutrient concentrations (e.g., nitrogen, phosphorus), dissolved oxygen, salinity, temperature, pH, turbidity, organic matter, trace metals, hydrocarbons, persistent organic pollutants, and microbial/pathogen loads. Assessment of marine water quality underpins evaluations of eutrophication, hypoxia, harmful algal blooms, contaminant bioavailability, and ecological risk. It is central to monitoring programs, environmental impact assessments, and management frameworks such as marine protected areas and coastal zone management, often integrating in situ measurements, remote sensing, and modeling.
This summer, millions of people across the country have been digging out sunscreen to protect themselves from a record-breaking series of heat waves.
Earth Sciences
Aug 9, 2026
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51
A bacterium linked to seafood-related illness and capable of resisting multiple antibiotics has been detected in fish-farming waters near Cat Ba Island, Vietnam, according to a new study highlighting the importance of monitoring ...
Molecular & Computational biology
Aug 4, 2026
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85
An international study led by Curtin University has put to bed a scientific debate dating back 176 years, confirming that two historically significant oyster species from Western Australia and Fiji are distinct species.
Ecology
Aug 3, 2026
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Researchers from the University of Plymouth have led the production of a new report highlighting the impact of climate change on marine plankton and pelagic habitats in U.K. waters. Published by the Marine Climate Change ...
Ecology
Jul 30, 2026
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10
The ocean absorbs roughly a quarter of humanity's carbon dioxide emissions each year. Understanding how that happens, and how it might change, is essential for predicting our climate's future. To do that, scientists need ...
Earth Sciences
Jul 30, 2026
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6
Ports rank among the most disturbed marine environments. Pollutants like trash, oil and toxins from antifouling paints tend to accumulate in enclosed harbors. Invasive species arriving in ballast water may displace native ...
Ecology
Jul 30, 2026
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38
Doctors can often detect diseases in humans using minimally invasive methods, like blood or urine tests, before symptoms become severe. Now, researchers at the Woods Hole Oceanographic Institution (WHOI) are applying a similar ...
Ecology
Jul 27, 2026
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14
Anyone who has boiled a pot of water understands that it takes both time and energy to raise the temperature, so it may come as a surprise to learn that scientists have long treated marine heat waves (MHWs) as isolated events. ...
Earth Sciences
Jul 22, 2026
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A new review in Limnology and Oceanography led by scientists at UC San Diego's Scripps Institution of Oceanography warns that the rapid loss of oxygen from the ocean and other aquatic ecosystems is pushing Earth toward an ...
Earth Sciences
Jul 17, 2026
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234
Human activities are fundamentally altering the chemical makeup of coral reefs, according to a study led by the University of Hawai'i at Mānoa and published in Nature Communications. The research team discovered that 25 contaminants ...
Plants & Animals
Jul 17, 2026
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