extraction
extraction on World Data Ocean: a running collection of 2 stories we have gathered and hand-picked because they are worth your time. Every post here touches on extraction in some way — the news, the analysis, the deep dives, and the occasional surprise find. A Global Hub for Ocean Intelligence 4 World Data Ocean is a centralized digital platform where researchers, scientists, and ocean enthusiasts converge to explore, analyze, and… New stories are added to this page as we find them, so check back if you want to keep up with what is happening around extraction, or subscribe to the RSS feed to get them as soon as they are published. Browse the collection below, or head back to the homepage to see everything World Data Ocean is covering right now.
Some coastal cities are sinking faster than the ocean is rising
Coastal communities face a compounding threat beyond rising sea levels: accelerated land subsidence. New research validates that densely populated coastal regions experience an average relative sea-level rise of approximately 6 millimeters annually – almost three times the global average. Contributing factors include groundwater extraction, urban development, and geological processes. This phenomenon significantly amplifies coastal vulnerability. For further exploration of related environmental challenges, see our article, "Earth’s waters are quietly running out of oxygen, scientists warn," which details a concerning decline in oceanic oxygen levels.
Green ultrasound-assisted extraction of pigments from Mexican Caribbean Sargassum
The escalating accumulation of *Sargassum* spp. along Caribbean coastlines presents both an environmental and economic challenge. These macroalgae contain valuable pigments—including fucoxanthin—exhibiting antioxidant and anti-inflammatory properties. This study investigates ultrasound-assisted extraction (UAE) utilizing hydroethanolic mixtures as a sustainable alternative to conventional, solvent-intensive methods. Results demonstrate optimized pigment recovery—specifically, 26.64 mg g⁻¹ dw fucoxanthin—achieved with 70% ethanol at 60°C, supporting a scalable strategy for *Sargassum* valorization.