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 ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Blue blood may look alien, but it’s one of evolution’s most ...

Octopuses are perhaps the most unusual creatures to have ever inhabited the ocean. Their soft body, eight arms, and high level of intelligence make them a fascinating subject of interest to many ...