Melissa Cristina Márquez

A major U.S. shark fin bust reveals how protected species are still slipping through global trade routes disguised as everyday goods, raising bigger questions about enforcement, demand and whether current protections are enough.

In an Australian estuary, two species of stingrays rely heavily on invisible organic matter rather than obvious prey like oysters, revealing how fragile and easily disrupted these food webs can be.

The first time you see it happen, you might think your eyes are playing tricks on you. A tiger shark, all muscle and confidence, moving steadily through the water.

The first time most people notice a remora, it is usually attached to something much bigger.

Remoras have long been seen as harmless hitchhikers. But new observations suggest these relationships may be far more invasive, and complicated, than scientists once thought.

A new network of shark bite trauma kits is being rolled out across 129 beaches in New South Wales, a move designed to give everyday beachgoers and lifesavers faster tools to respond when seconds matter most.

What is still out there in the deep ocean, beyond the reach of sunlight, beyond the places we routinely map, sample or even imagine?

A new genome-based study suggests that ancient sharks like frilled and cow sharks could sit outside the family tree that includes all other sharks, rays and skates.

A rare deep-sea sevengill shark with unusual patchy coloration was found to be in poor energetic condition, suggesting that even subtle disruptions to camouflage in the deep ocean may carry real survival costs.

A fossil whale skull with a shark tooth still embedded inside suggests that large sharks once hunted or scavenged in the North Sea. As oceans warm, similar predator-prey dynamics could return, offering a glimpse into the future through the lens of the past.