Tiny sea creature’s genes shed light on evolution of immunity

When compatible Hydractinia symbiolongicarpus colonies recognize each other as “self,” via Alr genes, they fuse together. Credit: Huene, AL et al., PNAS, 2022 How a tiny marine invertebrate distinguishes its own cells from competitors’ bears striking similarities to the human immune system, according to a new study led by the University of Pittsburgh School of … Read more

Archaeologists uncover ancient mosaics on the shore of the Sea of ​​Galilee

Khirbat al-Minya: The excavation site (brown) with its sunshade canopies located on the northwestern shore of the Sea of ​​Galilee—here viewed from the elevation of Tel Kinneret. Credit: Hans-Peter Kuhnen With the help of geomagnetic surface surveys and subsequent hands-on digging, an excavation team from Johannes Gutenberg University Mainz (JGU) has revealed new insights into … Read more

Arctic sea ice loss leads to more frequent strong El Niño events

−1) on the pressure gradient between the Aleutian Low and Siberian High between ICEp2 and ICEhist. Statistically significant (>95% confidence level) values ​​are marked by gray dots and black vectors. Credit: Nature Communications (2022). DOI: 10.1038/s41467-022-32705-2″ width=”800″ height=”530″/> Changes in winter sea-level pressure (SLP), and sea-surface temperature (SST) and near-surface winds induced by the seasonally … Read more

Rising sea temperatures threaten Atlantic populations of Bulwer’s petrels

Science of The Total Environment (2022). DOI: 10.1016/j.scitotenv.2022.157352″ width=”800″ height=”395″/> Graphical abstract. Credit: Science of The Total Environment (2022). DOI: 10.1016/j.scitotenv.2022.157352 The impact of the rise in sea temperatures predicted by the Intergovernmental Panel on Climate Change (IPCC) could affect the survival of the North Atlantic populations of Bulwer’s petrel in the Azores, Canary Islands … Read more

More than 1.1 million sea turtles poached over last three decades: study

The East Pacific hawksbill turtle is among the most endangered sea turtle populations and one of the oldest creatures on Earth. In a new ASU study spanning a 30-year period, 95% of poached sea turtles came from two species — green and hawksbill turtles — both of which are listed under the US Endangered Species … Read more

Record-high greenhouse gases, sea levels in 2021

Changes in global average sea level (background map) and local sea level (dots) between 1993 and 2021. In the global ocean, sea level has risen nearly everywhere (blue). Coastal areas where sea level has fallen (brown) are places where the land is rising as it rebounds from being compressed by ice sheets and glaciers during … Read more

Profiling meltwater distributions to strengthen sea ice predictions

Photos a) and b) show the observation equipment used in this study. They were taken from the ice and underwater, respectively. Photo c) shows the arrangement of the observation stations, taken from a helicopter looking downward. Here, the white, light blue, and dark blue areas are sea ice (or snow), melt ponds, and leads (areas … Read more

Scientists discover fossils of giant sea lizard that ruled the oceans 66 million years ago

Artist’s representation of Thalassotitan atrox. Credit: Andrey Atuchin Researchers have discovered a huge new mosasaur from Morocco, named Thalassotitan atrox, which filled the apex predator niche. With massive jaws and teeth like those of killer whales, Thalassotitan hunted other marine reptiles—plesiosaurs, sea turtles, and other mosasaurs. At the end of the Cretaceous period, 66 million … Read more

Fast-warming, ailing Med Sea may be a sign of things to come

People cool off on Puerto de Sagunto beach, east Spain on Tuesday, Aug. 16, 2022. While vacationers might enjoy the Mediterranean sea’s summer warmth, climate scientists are warning of dire consequences for its marine life as it burns up in a series of severe heat waves. Credit: AP Photo/Alberto Saiz While vacationers might enjoy the … Read more

Protecting 30% of Australia’s land and sea by 2030 sounds great, but it’s not what it seems

by Benjamin Cooke, Aidan Davison, Jamie Kirkpatrick and Lilian Pearce, The Conversation Feral animals like foxes can damage ecosystems in protected areas. Credit: Shutterstock You would have heard Australia’s environment isn’t doing well. A grim story of “crisis and decline” was how Environment Minister Tanya Plibersek described the situation when she launched the State of … Read more