Even ecosystems once considered somewhat shielded from human waste are still being reached by it.

"They are Silent Teachers," one researcher said.

Marine animals shrink more during periods of climate warming, according to a study spanning nearly 500 million years of Earth ...

An endangered sea turtle named Lucky washed up in Nova Scotia last year. Scientists are trying to solve the mystery of why ...

In the ocean's twilight zone, where the reach of the Sun fades to nothing, an epic migration begins every time night falls. It could also have an outsized effect on our climate.

Living nearly 900 meters underwater, this isopod evolved unusual adaptations to thrive in the world’s most food-scarce ...

Animals come in an extraordinary range of body shapes. A starfish looks nothing like an earthworm, a mouse, or a human. Yet even closely related species can appear radically different: corals, ...

Scientists found that sea anemones battle viruses with an unexpected immune strategy, revealing that evolution may have ...

Can you tell a venomous aquatic creature from a non-venomous one? Test your knowledge of some of the world’s most dangerous underwater animals here. Most people, when asked, are able to name a few ...

A new study suggests that deep-sea life reaps the benefits of icebergs’ castoffs — a rare silver lining as a warming planet ...

Beachgoers in one Southern California town had to run for their lives after two massive sea lions came out of the ocean and ...