By Mongabay.com Happy World Octopus Day! Every Oct 8, the world celebrates one of the more unusual creatures of the sea.

Giant octopuses measuring up to 62 feet (19 meters) in length were among the top ocean predators around 100 million years ago, according to new research that uncovered rare fossils hidden within solid ...

Finned octopus species alive today are all small, deep-sea animals that mostly live in pitch-black darkness thousands of meters beneath the surface of the sea. But a new discovery by a team of ...

The top predator prowling the seas during the age of the dinosaurs 100 million years ago may have been the octopus. New analyses of fossilized jaws reveal that massive, kraken-like octopuses once ...

World Octopus Day 2026 highlights octopuses' unusual intelligence, including learning, problem-solving, tool use and flexible ...

At the time of the dinosaurs, the oceans were teeming with life. Below the waves, giant marine reptiles, such as the fearsome 4m (13ft) long mosasaurs, were the undisputed apex predators. In artistic ...

The coconut octopus has solved a problem that stumps most soft-bodied ocean creatures: how to survive on a wide-open, featureless seafloor teeming with predators. Its solution involves tools, forward ...

Add Yahoo as a preferred source to see more of our stories on Google. Sharp, well-lit octopus centered with excellent tentacle detail© MBARI (Monterey Bay Aquarium Research Institute) via YouTube — ...

They change shape and color, and squirt ink. But they also will return your gaze, "as if they're scrutinizing you." ...

The female blanket octopus can weigh 40,000 times more than males, and can use the dangerous Portuguese man-o-war's tentacles ...