CHICAGO — A deep-sea robot gliding over the ocean floor near the Galápagos Islands captured footage of something researchers had never seen before: a tiny, vivid blue octopus no bigger than a golf ...

They change shape and color, and squirt ink. But they also will return your gaze, "as if they're scrutinizing you." ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Go diving into the intertidal waters of the Great Barrier ...

Octopuses possess specialized skin structures that allow them to change their color and texture to blend in. Their visual systems detect light and patterns, but they have poor color vision. Neural ...