A quarter of the fish sampled at markets in California and Indonesia has consumed plastic or man-made fiber material.

Machines much smaller than the width of a human hair could one day help clean up ocean pollution.

Warmer-than-usual waters in the North Atlantic contribute to both phenomena.

They gather in groups, scare their prey, and get far more intimate than most other sea creatures.

In competition for mates, males recognize the distinctive calls of their rivals and avoid costly fights by remembering who's dominant.

Researchers are closer to discovering the genes involved in the creature’s ability to change skin color and texture, and to move its eight arms independently.

Warmer ocean temperatures affect seasonal cycles, study finds.

Research team reports first direct measurement of geothermal heat flow rising from deep within the Earth to the bottom of the ice sheet.

Researchers call for balancing commercial extraction of deep-sea resources with protection of diverse seabed habitats.

The mass extinction event that killed the dinosaurs gave rise to the modern ‘Age of Fishes.’

Warming waters and fishing pressure are driving nesting seabirds away from their ancestral breeding ground in the Gulf of California into northern harbors.

Tough crustacean inspires new body armor and football helmet designs.