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.
A new study of the British Isles' coastal ecosystems has revealed that nitrogen enrichment is significantly reducing the abundance and variety of marine life. The research, published by scientists at Swansea University and ...
Ecology
May 6, 2026
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The vast, deserted South Pacific is considered unspoiled nature. But this ocean is not as unspoiled as we would like to think. A new study by a group of researchers from ETH Zurich and the GEOMAR Helmholtz Center for Ocean ...
Earth Sciences
May 6, 2026
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15
A new study found that cultivating seaweed species alongside marine finfish in integrated multi-trophic aquaculture (IMTA) operations, where seaweeds receive nutrient-rich effluent from fish production, can significantly ...
Biotechnology
May 5, 2026
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A rescue team on Saturday released from a barge in the North Sea a humpback whale that had been stranded in shallow waters near Germany since March, witnesses said.
Ecology
May 3, 2026
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85
Microplastics are now widely distributed throughout the environment—in water, in the air, in the soil and even inside living organisms, including marine life. However, most studies to date have focused on adult fish, including ...
Ecology
Apr 29, 2026
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Every time you go for a swim, some of your sunscreen gets left behind. An estimated 25% of applied sunscreen washes off during recreational water activities, releasing some 5,000 tons annually in reef areas alone, according ...
Ecology
Apr 28, 2026
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14
I spent last summer wading through seagrass meadows across Northern Ireland, from the sheltered waters of Strangford Lough to the exposed coast at Waterfoot Bay. I was collecting seagrass leaves and testing them for nitrogen ...
Ecology
Apr 19, 2026
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32
Microfiber pollution from large-scale laundry operations is emerging as a significant and largely unseen environmental issue. New research led by the University of Portsmouth is using Cleaner Seas Group's industrial filtration ...
Environment
Apr 18, 2026
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21
Restoring once abundant oyster reefs in temperate marginal seas such as the North Sea is a challenging task. New research by NIOZ marine ecologist Zhiyuan Zhao and colleagues shows that it is necessary to consider the short-term ...
Plants & Animals
Apr 17, 2026
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46
A microscopic green pigment can provide major insights into how severe tropical cyclones called typhoons impact water flow and ecosystems. Called chlorophyll a, the pigment is responsible for absorbing light and initiating ...
Earth Sciences
Apr 16, 2026
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