The decades-old signature of nuclear testing can reveal the ages of organisms, or even individual cells.

A newfound family of metabolites emits green light in response to the blue light of the deep ocean, causing certain sharks to glow.

To track the behavior of blacktip sharks, researchers are equipping them with radios and satellite sensors.

Galagadon’s tiny teeth look like the spaceships in its namesake video game from the early 1980s.

A newly developed underwater ultrasound reveals a fetal shark swimming between the two uteri of its mother.

Given the speed and efficiency of environmental (eDNA) sampling, a much larger portion of the sea can be screened, in a shorter time, for patterns of diversity.

Scientists study the development of scales in skate embryos. 

Researchers describe more than 200 species of tapeworm from a decade-long collection of tapeworms from the digestive systems of animals around the world. 

A proposal to do so would cause waste, promote less sustainable fisheries, and penalize US fishers who follow best practices.