When it comes to fishing, reeling in the biggest one is often the goal. But as it turns out, leaving the largest and oldest fish in the water can help entire fish populations cope better with ocean ...

Dead fish, full of a lifetime of mercury, may function as a vessel of this toxin to the deep ocean. While mercury occurs naturally in the environment, human industrial activities have rapidly ...

The sailfish has long held the title of the fastest fish in the ocean, a reputation built on a slender, javelin-shaped body ...

Fish face a new threat — ocean acidification caused by global warming. In a recent study published in Global Change Biology, researchers found that warming waters and acidification could adversely ...

PORTLAND, Maine — This year’s marine heat waves and spiking ocean temperatures foretell big changes in the future for some of the largest fish in the sea, such as sharks, tunas and swordfish. The ...

Big fish are harder to find in areas sprawling with human activity, unless you're looking in no-take marine reserves, according to a new study led by marine scientists at The University of Western ...

Ocean fish populations have fallen dramatically in the past half-century, and climate change is expected to make the problem worse. Governments have designated “marine protected areas”, where where ...

"These findings are essential for understanding how the nutritional value of species change under climate change." ...

Somewhere in the ocean's depths swims a small fish with a see-through skull, tubular eyes, and visual tricks that break every rule biology textbooks lay down about how vertebrates see.