Many creatures light up the world’s waters. From microorganisms that turn shoreline waves electric blue at night to anglerfish deep down who use glowing lures to entice prey, a varied array of marine ...

Stunning footage of a baby sea urchin has been awarded fifth place in the annual Nikon Small World in Motion video competition.

Beneath sea urchins’ exterior spines, rounded skeletons called tests are jewels of color, texture, and symmetry. There are hundreds of urchin species, and they’re found in every ocean on Earth, from ...

Researchers have discovered a new species of glowing sea slug deep in the ocean’s midnight zone. Monterey Bay Aquarium Research Institute (MBARI) scientists said in a press release on Tuesday that ...