seafloor
seafloor on World Data Ocean: a running collection of 6 stories we have gathered and hand-picked because they are worth your time. Every post here touches on seafloor 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 seafloor, 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.
How are ghost nets and marine debris detected using Side-Scan Sonar in real-world surveys?
Locating ghost nets and marine debris on the seafloor utilizes side-scan sonar in real-world surveys, a process blending technological capability with ongoing manual analysis. Oceanographers systematically tow sonar systems, generating detailed acoustic imagery of the seabed. While automated target detection is improving, classification remains significantly manual, requiring expert interpretation to differentiate fishing gear from natural features like rock formations—a challenge amplified by seabed complexity and debris degradation. Distinguishing between these requires careful assessment of target shape, size, and acoustic signature.
Does NOAA publish any real-time or near-real-time seafloor point cloud data?
Determining the availability of real-time or near-real-time seafloor point cloud data from NOAA requires careful consideration. While the National Centers for Environmental Information (NCEI) archives extensive multibeam bathymetric surveys, current practices primarily involve post-processing, resulting in a delay before public release. Presently, a live or near-live data feed for survey data does not exist. Coverage for recent surveys largely prioritizes U.S. Exclusive Economic Zone (EEZ) and coastal regions, though broader data acquisition efforts are ongoing.
I wanna become a Marine Archeologist
Embarking on a career path at 17 can be challenging, especially when exploring fields like marine archaeology. Your fascination with the ocean, combined with a humanities background, suggests a promising intersection of interests. Marine archaeology offers a unique blend of scientific rigor and historical inquiry, but it’s crucial to assess if it aligns with your long-term goals. Considering the evolving landscape of journalism, exploring alternative, data-driven ocean careers is wise.
What is the deepest point on the ocean floor in Indian EEZ?
The Indian Exclusive Economic Zone (EEZ) does not contain a trench comparable to the Mariana Trench, the deepest known point globally. However, the ocean floor within the Indian Ocean reaches significant depths. Empirical data, as detailed in a recent *ScienceDirect* article, indicates depths exceeding 6,000 meters in certain regions. Globally, ocean floors can descend to over 11,000 meters.
Ancient Arctic carbon is pouring into the sea, but the seabed captures most of it
Thawing Arctic permafrost is releasing ancient carbon into the ocean, prompting concerns about accelerated climate change. However, recent analysis of sediment cores near Herschel Island, Canada, reveals a reassuring mitigation: approximately 90% of this land-derived carbon is captured and buried within the seabed. Only a small fraction, roughly 10%, is converted into greenhouse gases. This discovery highlights a crucial, previously underestimated, natural process. For further exploration of innovative ocean technologies, see our coverage of the "Camera 1: 2026 Cook Islands ROV Exploration (EX2605)."
Indices of reduced fish biomass, changes in fish biodiversity and seafloor macrolitter – implications for fisheries management in Sri Lanka
A longitudinal study utilizing fisheries acoustics and bottom trawl surveys from 1978-2018 reveals significant shifts in Sri Lankan waters. Data collected by the “Dr. Fridtjof Nansen” vessel indicate a drastic reduction in total fish biomass, declining from approximately 280,000-395,000 tons to 173,000 tons over four decades. Concurrent changes in fish biodiversity, including reduced average lengths for commercially important species, alongside increased macro-litter accumulation, underscore the urgent need for validated fisheries management plans and environmental action.