Researchers from the Stokes School of Marine and Environmental Sciences at the University of South Alabama recently completed their annual presentation to the leadership at Alabama Marine Resources Division on the condition of fish populations around the more than 10,000 artificial reefs off Alabama’s coast.

13 June 2025 / Kiel. Methods to enhance the ocean’s uptake of carbon dioxide (CO₂) are being explored to help tackle the climate crisis. However, some of these approaches could significantly exacerbate ocean deoxygenation. Their potential impact on marine oxygen must therefore be systematically considered when assessing their suitability. This is the conclusion of an international team of researchers led by Prof. Dr Andreas Oschlies from the GEOMAR Helmholtz Centre for Ocean Research Kiel. The findings were published yesterday in the journal Environmental Research Letters.

According to new research from Tulane University, mercury levels in the world's rivers have more than doubled since the pre-industrial era, and primary drivers of the increase are wastewater discharge, soil erosion and mercury releases from industrial activities and mining. The study, published in Science Advances, developed a process-based model to simulate mercury transport in rivers and found that global rivers carried approximately 390 metric tons of mercury to oceans annually before 1850. Today, that figure has jumped to about 1,000 metric tons per year. The research provides the first known global baseline for riverine mercury pollution.

Trace metals such as iron or zinc that are stored in deep-sea sediments are lost forever to phytoplankton on the ocean surface. This is what geochemists believed for a long time about the cycle of micronutrients in seawater. Now, researchers at ETH Zurich have discovered that this is not the case.Trace metals such as iron or zinc that are stored in deep-sea sediments are lost forever to phytoplankton on the ocean surface. This is what geochemists believed for a long time about the cycle of micronutrients in seawater. Now, researchers at ETH Zurich have discovered that this is not the case.