This unassuming octopus pairs bacterial chemistry with evolutionary efficiency to deliver one of the most powerful defenses in all of the ocean.

Researchers studying a deep-sea octopus called Muusoctopus robustus have found thousands of the animals congregating at hydrothermal springs near an underwater mountain off California, raising fresh ...

Add Yahoo as a preferred source to see more of our stories on Google. Getty Images / Mauricio Handler In the new Prime documentary series “Octopus!” actress Phoebe Waller-Bridge spends an hour and a ...

The octopus is an exceptional organism with an extremely complex brain and cognitive abilities that are unique among invertebrates. So much so that in some ways it has more in common with vertebrates ...

An octopus at the Seattle Aquarium is making headlines for trying to bust out of its enclosures for a taste of the vertebrates life. The cephalopod scaled its enclosure Feb. 26 and stretched three ...