Background Accurate species delimitation within electric rays of the genus Narcine has been hindered by overlapping morphological characters and limited molecular resolution in previous single-locus s...

Predators are often assumed to concentrate where prey are most abundant, but the most abundant prey may not be the easiest to catch. We studied tiger sharks hunting young albatross seabirds during an....

Identifying reproductively important areas is critical for improved conservation and management of fish species, including sharks. Despite this, shark mating behavior is rarely observed in the wild. H...

Technique shown to eradicate exotic trout—by producing all male populations

The critically-endangered river shark had only been sighted a handful of times in the 21st century. Then one Indonesian fisherman accidentally caught 17 in a week.

Understanding the spatiotemporal movements of organisms within marine protected areas are essential for evaluating the efficacy of management practices desig...

Shark populations on coral reefs have declined globally, but few baselines exist to quantify natural variability before human impact. Using fossil dermal denticles preserved in reef sediments, we reco...

We present evidence suggesting that the Abrolhos Bank functions as key habitat for early life stages of Sphyrna mokarran. Kernel density estimation revealed spatially structured aggregations, with ne....

La doctorante en biologie Luana H. Bauer s’intéresse à la bioaccumulation d’éléments traces chez huit espèces de poissons floridiens.

Recreational catch-and-release fishing is a common practice and is often described as an important conservation management strategy. However, despite fishes being released alive, the physiological str...

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Sharks are on the move. Bull sharks expand north, great whites head gulfward. We explain.

We examined morphology, 3D arrangement, and mineral amount in cartilaginous vertebrae from four lamniform shark families (Alopiidae, Carchariidae, Cetorhinidae, and Lamnidae). We identified family-sp...

The gentle giants are the world's largest fish—and love the tropics.

The Greenland shark (Somniosus microcephalus) is a deep-sea vertebrate inhabiting the cold waters of the North Atlantic and Arctic Ocean and is renowned for its exceptional longevity, with individual...

Researchers at the University of Miami Rosenstiel School found temperature data collected from wayfaring sharks helped improve short-term climate forecasts.

This study presents the first direct dietary assessment of a juvenile whale shark (Rhincodon typus) using DNA recovered from its stomach content. A DNA metabarcoding library for the 18S gene showed t...

Long-distance migrations allow animals to exploit seasonal prey opportunities and track favorable oceanographic conditions. The basking shark (Cetorhinus maximus) is a large, filter-feeding elasmobran...

The Asia region harbors exceptional chondrichthyan (shark, ray, and chimaera) diversity but faces intense fishing pressure. The Important Shark and Ray Area (ISRA) process provides a collaborative, ev...

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

Warmer weather is here, and more people are planning to head to the beach. But just a reminder that we’re not the only ones returning for the season. Sharks are too. And experts say they are preparing...

Sharks and rays exhibit diverse reproductive strategies that reflect evolutionary adaptations in anatomy and physiology. This study compares reproduct…