Compared with the arms of an octopus, our own bony limbs are about as flexible as old tree branches. It stands to reason that the anatomy within the cephalopod's sucker-speckled appendages ought to be ...

Intriguing and incredibly unique, octopuses are cephalopods with three hearts that pump blue blood throughout their eight arms. These intelligent sea creatures have multiple brains — nine, to be exact ...

For 25 years, a 300-million-year-old fossil from Illinois held an extraordinary distinction: the oldest octopus ever found, ...

The eldritch, alien movements of octopus arms have captivated people for generations. These underwater cephalopods don't have just one brain but nine, with each of their arms able to act ...

Source: National Marine Sanctuaries, via Wikimedia Commons. Public domain. In a new study, researchers from the University of Queensland used advanced magnetic resonance imaging (MRI) scans to ...

A small octopus living deep beneath the eastern Pacific has gone unnoticed for years in underwater footage and specimen ...

A golf-ball-sized blue octopus collected nearly a mile beneath the Pacific Ocean in 2015 has been formally described as a new species — and in doing so, it has forced scientists to rewrite the ...