Coral reefs are undoubtedly in crisis. Scientists have documented concerning coral bleaching events, dramatic declines in coral cover, fish and shark populations across the Caribbean over recent decades. But a critical question has remained unanswered: has the way energy flows through reef ecosystems also changed? A new study led by scientists at the Smithsonian Tropical Research Institute (STRI) and published in Nature reveals that it has, profoundly. Food chains on modern Caribbean reefs are 60-70% shorter than they were 7,000 years ago, and individual fish have lost the dietary specialisation that once sustained a complex web of energy pathways. 

The tide has turned on the conservation success story of the southern right whale.

Once considered a global conservation success story, the species is now emerging as a warning signal of how climate change is impacting threatened marine life, according to new research led by scientists from Flinders University and Curtin University with international collaborators in the US and South Africa.

A new scientific study has confirmed the accidental capture of a juvenile white shark (Carcharodon carcharias) within the Spanish Exclusive Economic Zone (EEZ), providing rare evidence of the species' persistent presence in the Mediterranean. The findings, published in Acta Ichthyologica et Piscatoria, contextualize this 2023 encounter within 160 years of regional records and highlight the urgent need for conservation of this iconic species.

Rivers are the primary pathways of microplastics and mesoplastics (MMPs) input into the ocean. Most studies have examined MMP concentration in rivers during low-flows, overlooking high-flow or flooding situations, wherein large amounts of plastic can be transported. To address this gap, researchers investigated how MMP concentration changes during floods in four rivers in Japan, offering valuable new insights. The findings show that overlooking high-flow conditions can lead to severe underestimation of annual plastic load.

On 20 March 2026, the glaciologist will take over as scientific director of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI). To date, he has been active as the director of the International Arctic Research Center at the University of Alaska in Fairbanks.

Harbour porpoises “buzz” less when boats and ships and nearby – suggesting a drop in feeding and socialising, new research shows.