Sea anemones and jellyfish don’t have brains, but the way their neurons behave during sleep shows some surprising ...

A finger-length fish has reignited a long-running debate about self-awareness, cognition and how much we’ve underestimated ...

For 162 million years, sturgeons have fended off everything they’ve faced. Now scientists are racing to save these living fossils. The white sturgeon is the largest freshwater fish in North America; ...

When Ted Judah goes scuba diving off the coast in Monterey Bay, he normally swims at the surface to the area above the dive site and then descends. But on the morning of Dec. 30, the water was ...