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Global Patterns of Mercury Speciation and Biomagnification in Sharks: Ecological Drivers and Food Safety Implications.

Mercury (Hg) is a global contaminant that biomagnifies in food webs, raising concerns for food safety, fisheries exploitation, and wildlife conservation. Fish, including apex predators like sharks, ar...

Friday Harbor laboratories: experimental biology at the water's edge.

The University of Washington's marine field station, the Friday Harbor Laboratories (FHL), has been a center for diverse biological research for over 100 years. The facility is a complete mini-campus ...

Wound healing in Atlantic spiny dogfish sharks.

Field observations and limited experimental studies indicate that elasmobranchs can repair substantial skin injuries, but the temporal course and cellular composition of wound healing in Atlantic spin...

Hidden in the dark: description of Calicotyle carmenae n. sp. (Monogenea: Monocotylidae) from deepwater catsharks (Elasmobranchii: Pentanchidae) off Iceland.

A new species of Calicotyle (Monogenea: Monocotylidae) is described from three deepwater catshark species (Elasmobranchii: Pentanchidae) collected off Iceland. Calicotyle carmenae n. sp. is diagnosed ...

Metals in highly consumed fish from markets of the Mexican Pacific coast.

Levels of cadmium, copper, mercury, lead and zinc in fish from the Mexican Pacific are of interest because they are marine resources of great commercial value and high human consumption. To determine ...

Post-release behaviour, physiological stress and survival of longline-caught Greenland sharks.

Incidental capture of sharks by fisheries is common, making it critical to assess species' physiological and behavioural stress responses and post-release survival. Previous studies have examined bloo...

First in situ observations of the goblin shark Mitsukurina owstoni.

We report the first live in situ observations of the iconic goblin shark (Mitsukurina owstoni) on a seamount near Jarvis Island in 2019 and on the slope of the Tonga Trench in 2024. Past observations ...

Morphological and molecular evidence of the Antarctic sleeper shark Somniosus antarcticus (Somniosidae) in northern Chile.

Sleeper sharks (family Somniosidae) are large, slow-growing deep-sea sharks that are rarely documented in the southeastern Pacific, and records from the Chilean waters have remained taxonomically unce...

The Greenland shark genome: Insights into lifespan extremes and population dynamics.

The Greenland shark (Somniosus microcephalus) is known for its slow metabolism and deep-sea habitat. It is thought to be the longest-lived vertebrate on Earth, with an estimated lifespan of 392 ± 120 ...

Resilience to Cardiac Aging in Greenland Shark Somniosus microcephalus.

The Greenland shark (Somniosus microcephalus), with a lifespan estimated around 300 years, represents a unique model for studying vertebrate longevity. Here, we characterize its cardiac aging profile ...

Big sharks in the dark: High densities of the bluntnose sixgill shark Hexanchus griseus in the Gulf of Naples.

Global patterns of elasmobranch diversity and consequences of species loss.

Elasmobranchs (sharks and rays) are among the most threatened marine vertebrates worldwide, yet the consequences of their decline across multiple dimensions of biodiversity remain poorly understood. H...

Greenland sharks conform to expectations of neutral buoyancy but exhibit inter-individual variation.

Buoyancy is an omnipresent force that governs how aquatic animals move through three-dimensional space, leading to physiological and behavioural adaptions across species. Swimming effort during vertic...