The finned octopus lived alongside T. rex and may have been one of the top predators in the ancient ocean food chain.

This octopus survives in plain sight. Here’s how it adapts its body in real time to mirror dangerous species and navigate one of the ocean’s most exposed environments.

We now know that the warmth of the springs at the Octopus Garden give the embryos a better chance for hatching and early life ...

In 2017, a remotely operated vehicle descended the rocky slopes of the Caroline Seamount in the Western Pacific and collected ...

Can you imagine spending your entire life without ever touching the floor? Well, that’s the reality for this octopus. Pelagic ...

Four new species of deep-sea octopus have been discovered on underwater mountains around 3 kilometres down in the Pacific off Costa Rica, according to Schmidt Ocean Institute. A radical new theory ...

The discovery challenges a 370-million-year-old assumption that only vertebrates could be top ocean predators.

Unlike most of its invertebrate peers, octopuses gave up protective shells... But it seems that the sacrifice was totally worth it.

The Kraken is a huge tentacled sea monster from Norse folklore that drags ships and sailors down into the deep.

A new study suggests that Nanaimoteuthis haggarti could have reached up to 19 metres in length, potentially making them the largest invertebrates ever known.

The Red Sea, sandwiched between northeast Africa and the Arabian Peninsula, is teeming with life, including octopuses and more than a thousand species of fish. Every day, the goal of these creatures ...

As an octopus biologist, I get a call from the media every summer because someone has had an encounter with a blue-ringed octopus. Thankfully, everyone has been OK. Blue-ringed octopus are famed for ...