In the dark depths of the sea, where vision is difficult, meeting a mate becomes a problem. Octopuses, which are highly ...

Some male octopuses perform one of the most extreme survival strategies in the animal kingdom, they detach their own arm during reproduction. This bizarre behaviour is not self-harm, but a biological ...

Argonaut octopuses are rarely seen by humans, as they live in the open ocean away from shores. Females have a thin shell that carries their eggs, giving them the nickname ‘paper nautilus.’ Males have ...

Octopuses are an extremely diverse group of sea life. With roughly 300 species in total, there are many octopus species that are unfamiliar to most people. One example is the argonaut, a type of ...

A famous 300-million-year-old fossil that was thought to be the world's oldest octopus—even featuring in the Guinness Book of Records—has turned out to be something else altogether. In what amounts to ...

Learn how a 300-million-year-old fossil once thought to be the oldest octopus was reidentified after hidden teeth were uncovered, shifting the timeline of octopus evolution. A 300-million-year-old ...

Octopus sex hinges on a peculiar anatomical trick. In lieu of a penis, the male has a special mating arm called a hectocotylus. He feels around with it inside the female’s mantle—the bulbous structure ...

Pohlsepia mazonensis, a visually underwhelming fossil from Illinois, fundamentally broke our understanding of cephalopod evolution. Described in 2000 and hailed as the oldest known octopus in the ...

LONDON (AP) — A 300-million-year-old tentacled sea creature has lost its crown as the world’s oldest octopus, after scientists found evidence that it’s not an octopus at all. Newly published research ...

In 2000, researchers described an odd fossil found not far from Chicago. It had a round body, finlike structures on one end and a tangle of arms. The fossil was classified as an octopus and named ...

This is read by an automated voice. Please report any issues or inconsistencies here. Ghost, the Long Beach Aquarium’s beloved giant Pacific octopus, has died, the aquarium announced in a news release ...