They're tiny, blobby, butt-shaped, and glow in the dark. What the heck are they? Scientists are still figuring them out.

Growing up to 8 inches (20 centimeters) long, Antarctic scale worms are a type of ocean-dwelling polychaete, or bristle worm (polychaete is Latin for "many bristles"). Related to earthworms and ...

Learn more about some of the best new discoveries: Off the southern coast of Japan, a new species of marine bristle worm, Eunice siphoninsidiator, was discovered living within the structure of glass ...

However, the bristle worms have a somewhat softer chitin—beta chitin—which is particularly interesting for biomedical applications. The bristles allow the worms to move around in the water.

Inside deep-sea coral in the Pacific, an iridescent creature waits in ambush. Zhou Y, Zhang R, Shen C, Mao Q, Zhang M, Zhang ...

India's bristle worms are often overlooked. But they are crucial to the health of the country's wetlands – which is why local women are working to catch the poachers decimating their population.

The striking similarity between this modern bristle worm and its Cambrian relative speaks to a lifestyle that hasn’t changed much in 500 million years. Photographed at the Elizabeth Moore ...

In chronobiologist Kristin Tessmar-Raible’s laboratory at the University of Vienna, the romantic activities of Platynereis dumerilii, a small orange seafaring bristle worm, help shed light on this ...