A newly discovered fossil site in Egypt is reshaping scientists’ understanding of how marine ecosystems recovered after the asteroid impact that ended the Age of Dinosaurs. In a study published in Science Advances, researchers report that compositionally modern marine fish communities were already established just 4 million years after the end-Cretaceous mass extinction.

The site, known as Qreiya 3 and dated to 62.2 million years ago, preserves an exceptionally diverse offshore marine ecosystem from the early Paleocene. Hundreds of fossil fishes recovered from the site include more than 20 groups of ray-finned fishes, making it the richest and most diverse Danian fish assemblage yet discovered.

The fossils reveal that many fish groups common in today’s oceans—including early relatives of tunas, mackerels, jacks, moonfishes, and pipefishes—had already diversified shortly after the extinction event that wiped out non-avian dinosaurs. At the same time, several predatory fish groups dominant in Cretaceous seas are notably absent, suggesting a rapid ecological turnover in marine ecosystems.

Led by researchers from the Mansoura University Vertebrate Paleontology Center in collaboration with the University of Michigan and KU Leuven, the study provides some of the clearest fossil evidence yet that modern-style marine fish faunas emerged remarkably quickly after one of Earth’s greatest mass extinctions.

A new Dartmouth study shows octopuses can use mirrors to find food out of sight, demonstrating spatial cognitive abilities. The results are published in Current Biology.

Fossils from 520-million-year-old rocks in China provide the first clear evidence that bryozoans were part of the Cambrian explosion. Bryozoans are tiny, filter-feeding colonial animals common in today’s oceans, but their early history has long been unclear because they did not appear in the fossil record until about 50 million years after most major animal groups. These newly discovered fossils fill that gap, showing that bryozoans emerged during the Cambrian explosion alongside other early animal groups.

A new study is opening a rare acoustic window into the hidden world of underwater predators. Using machine learning and underwater recordings, researchers developed a system that can detect and classify shell-crushing feeding events by whitespotted eagle rays as they prey on clams, oysters and other shellfish. The technology delivers near-deep learning accuracy with far less computing power, paving the way for real-time, large-scale monitoring of predator behavior and the health of coastal ecosystems.

Researchers from FIU have discovered that bigger species of shark, such as the Caribbean reef shark, prefer to hunt in small reef areas that are densely populated with prey. 

Industrial oily wastewater discharges and marine oil spills pose a serious threat to ecosystems. A new strategy for efficient and controllable oil–water separation is provided by smart-responsive wettability materials, owing to their ability to dynamically switch surface wettability in response to external stimuli. Under this premise, we reviewed the research progress and applications of such materials. First, we described the theoretical basis of wettability and the mechanism of oil–water separation. Subsequently, we comparatively analyzed the structural characteristics and separation properties of four types of special wettable materials. We focused on eight categories of smart response wetting materials: temperature, pH, light, electricity, gas, ion, solvent, and multi-response. For each type, we analyzed the response mechanisms, advantages, and limitations in oil–water separation. In addition, we compared the advantages and disadvantages of key preparation techniques such as layer-by-layer self-assembly, electrostatic spinning, and surface-initiated atom transfer radical polymerization. Finally, we summarized the current research status and challenges in the field of smart-responsive wetting materials and looked forward to future development directions.

Prolonged nutrient deprivation drives motif-specific DNA methylation changes in Flavobacterium columnare, a major fish pathogen. Using advanced Nanopore sequencing, researchers found that specific methylation patterns—especially demethylation of a 6mA-modified motif—serve as epigenetic signatures of starvation adaptation. Temperature also influences these changes. The findings reveal a novel survival mechanism in bacteria and provide a valuable methodological reference for bacterial epigenetics.

SAN ANTONIO — June 1, 2026 — Southwest Research Institute (SwRI) has upgraded its Ocean Simulation Laboratories with a new 30-inch diameter pressure vessel. This new vessel allows SwRI to test larger equipment at conditions that simulate full-ocean depth and features a novel SwRI-designed quick-acting closure.