See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Underwater footage of an "incredible" moment shows a marine biologist ...

Scientists have identified a golf-ball-sized blue octopus from deep waters near the Galápagos as a new species. The discovery ...

This predator can dramatically increase its reach by wielding several stinging tentacles in addition to its 8 arms. Managing multiple stinging tentacles at once presents a unique coordination ...

One pint-sized ocean rescue has been stealing hearts online for nearly a decade — and may even have the power to change how you think about plastic pollution. In a YouTube video that has racked up ...

Learn why some octopus species bury themselves in the sand and how this remarkable behaviour helps them survive.

'We cannot be at peace': Savannah Guthrie makes emotional plea on 'Today' as new details emerge in mother's disappearance ...

Octopuses and squids carry the largest nervous systems of any invertebrate, and roughly two-thirds of an octopus’s neurons ...