Symbiotic ammonia-oxidizing archaea in marine sponges are not strict specialists, but true "flexitarians": A team led by microbiologists Bettina Glasl and Katharina Kitzinger from the University of Vienna, in collaboration with partners from Australia, has shown that these microbes dine not only on ammonia but also on amino acids such as valine, leucine, and isoleucine - and presumably do that to communicate with their animal host. The findings shed new light on one of the oldest animal-microbe symbiotic relationships on Earth and point to a previously underestimated role played by archaea. The study was published in the prestigious journal Science Advances.

A study investigated how ingesting expanded polystyrene (EPS) affects wharf roaches, a common shoreline scavenger. EPS-fed animals showed no significant reduction in lifespan, but their guts displayed altered expression of genes involved in chemical defense, DNA repair, and digestion. Gut microbial communities were largely unchanged, although several rare taxa were detected only in EPS-fed specimens. The findings highlight the need for a more comprehensive understanding of how microplastic pollution affects marine ecosystems.

Climate change continues to threaten the world’s coral reefs, which support at least a quarter of all marine life. Though probiotics have been shown to rehabilitate corals in aquarium experiments, demonstrating the efficacy of such microbial therapy in the ocean is difficult. In a study publishing in the Cell Press journal Cell Reports on September 3, researchers establish that both live probiotic and inactivated postbiotic treatments improve coral health—while the animals are under thermal stress during a natural marine heatwave.

Global study of more than 23,000 marine mollusk species projects major shifts in body size by 2100 — including surprising growth in some animals and ocean regions

The new method, as well as allowing study of individuals, also reduces the potential for louse faecal contamination. It allows collection of high-quality samples from a single louse per test, with substantial yields of secretory proteins per louse.

Melinda Webster, a research scientist at the UW’s Applied Physics Laboratory, is the lead author on a new study that catalogs changes in Arctic and Antarctic sea ice over the past 50-plus years. She spoke with UW News about the story behind the numbers.

Australian engineers have created a strong and lightweight titanium material that floats in water, even after severe damage, revealing a promising new material for marine infrastructure. 

Ying Zhang in URI's College of the Environment and Life Sciences is leading a collaboration funded by the National Science Foundation that will leverage existing collaborations and coastal research networks in Rhode Island and Louisiana. With nearly 40% of Americans living in coastal counties, this research is highly relevant to building community resilience and economic sustainability in both states.