An international study published in Nature Climate Change reveals that vast regions of the global ocean are experiencing compound state change, with simultaneously warming, becoming saltier or fresher, losing oxygen, and acidifying—clear indicators of climate change pushing marine environments into uncharted territory.

Estimating the multigenerational effects of chiral pesticide metabolites is essential for fully understanding their ecological impacts. This study demonstrated that S-o,p'-DDD accumulated preferentially in adult zebrafish and transferred more efficiently to their offspring compared to the R-enantiomer, leading to pronounced developmental defects and endocrine disruption across both generations. Molecular docking against key thyroid-related proteins provided a mechanistic explanation for this stereospecific toxicity. These findings suggest that evaluating only racemic mixtures may underestimate real-world hazards.

A massive, multi-year scientific expedition determined that land use on tropical islands can shape water quality in lagoons and that rainfall can be an important mediator for connections between land and lagoon waters. The scale of this research is sigificant: the researchers assessed at algal tissue nutrients, water chemistry, and microbial communities at nearly 200 sites around the island of Mo‘orea, French Polynesia, and repeated this sampling over multiple years.

Florida State University oceanographers have discovered a significant connection between small-scale microbial processes and ecosystem-wide dynamics, offering new insights into the mechanisms driving marine carbon storage.

Researchers from Kelson Marine in Portland, Maine and the University of Maine developed a new tool that provides detailed economic analyses for kelp farmers and reveals strategies for reducing the cost of farmed seaweed. The tool incorporates many different factors from a farming scenario, including site specific-ocean and meteorological conditions, species-specific crop characteristics and growth, workboat types and sizes, labor structures, operational technology, local shore-side infrastructure, maintenance schedules and more. By resolving the comprehensive impact on the bottom line and the multitude of tradeoffs associated with specific operational and farm design decisions, the tool provides unique insight into the implications of cost-saving alternatives.

An innovative alternative to concrete could enable important coastal restoration work to take place. The material Xiriton, made with local grass species and seawater, captures CO₂ instead of emitting it, as conventional concrete does. NIOZ researchers successfully tested the material for its suitability as a substrate for shell banks or salt marsh restoration, for example. They published their work in the journal Frontiers in Marine Science.

Growing port congestion demands smarter management. In a new study, researchers developed a dynamic forecasting framework using real-time operation indicators from a two-stage queuing model to predict vessel turnaround time. Tested with data from Busan Port, the model achieved up to 28% higher accuracy than traditional methods. By improving berth planning and resource allocation, this approach can significantly enhance efficiency and reduce delays in global port operations.

Sixty-million-year-old rock samples from deep under the ocean have revealed how huge amounts of carbon dioxide are stored for millennia in piles of lava rubble that accumulate on the seafloor.

Research led by polar scientists from Northumbria University has revealed new hope in natural environmental systems found in East Antarctica which could help mitigate the overall rise of carbon dioxide in the atmosphere over long timescales.

As Antarctica's ice sheets thin due to climate change, newly exposed mountain peaks could significantly increase the supply of vital nutrients to the Southern Ocean which surrounds the continent, potentially enhancing its ability to absorb atmospheric carbon dioxide, according to the research published in Nature Communications.

An international study published today in Communications Biology has used unique coral reefs in Papua New Guinea to determine the likely impact of ocean acidification on coral reefs in the face of climate change.

Oceans are becoming more acidic as they absorb carbon dioxide from the atmosphere, and that acid will dissolve coral limestone. But it’s hard to predict what impact this will have on whole ecosystems from studies using aquariums and models.

The research team, led by the Australian Institute of Marine Science (AIMS), studied entire coral reefs, locally enriched with CO₂ that is seeping from the sea floor, near some of Papua New Guinea’s remote shallow submarine volcanoes.

Dr. Katharina Fabricius, a coral researcher at AIMS in Townsville and senior author on the paper, says the research has revealed which species can thrive under lifelong exposure to elevated CO₂.

“These unique natural laboratories are like a time machine,” said Dr Fabricius.  

“The CO₂ seeps have allowed us to study the reefs’ tolerance limits and make predictions. How will coral reefs cope if emissions are in line with the Paris Agreement level emissions? How will they respond to higher CO₂ emissions scenarios?”