Peacocks, panther chameleons, scarlet macaws, clown fish, toucans, blue-ringed octopuses, and so many more: The animal kingdom has countless denizens with extraordinarily colorful beauty. But in many ...

Animals with blue eyes are a rare occurrence in nature due to being linked to recessive genetics, mutations, and specific genes. Despite that, many species still have beautifully rich blue eyes. While ...

A new blue octopus species, Microeledone galapagensis, was recently discovered near Darwin Island in northern Galápagos.

Blood is synonymous with bright red or deep maroon, but it certainly doesn’t generally bring to mind shades of blue. But ...

Octopuses pump blue blood through three separate hearts, a biological arrangement that depends entirely on copper rather than ...

Between the sky and sea, nature appears to favor blue, as do we humans. Yet the color is rare in nature—especially not in “a blue-violet hue resembling the color of electrical sparks,” which is how a ...

Rare animals have the ability to capture our attention. A Massachusetts man had the internet buzzing this week after a posting a photo of a bright blue lobster he caught Monday. It's hard not to be in ...

Bold hues of red, orange, yellow, blue and purple help plants and animals communicate with their own species and others in their efforts to survive. Vivid orange dart frogs warn predators of their ...

Q. You once wrote that blue pigment is not known to exist in any terrestrial or freshwater animals with backbones. I found a ...