The Amazon molly is an all-female fish that ditched sexual reproduction entirely, thriving for over 100,000 years through ...

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

For mating male octopuses, one limb is more important than all others. That is the third right arm or hectocotylus, which is ...

Learn how a 300-million-year-old fossil once thought to be the oldest octopus was reidentified after hidden teeth were ...

“It makes sense that the arm is both the sensor and the mating organ because in these chance encounters, the arm has to be ...

This week's cover of the international journal 'Science' features a scene of octopuses mating. Surprisingly, the male octopus ...

To test their ideas, scientists observed California two-spot octopuses in tanks. They placed males and females on opposite ...

In lieu of a penis, the male has a special mating arm called a hectocotylus. In a new study published today in Science, researchers show that the male octopus’s mating arm can sense a female’s sex ...

The hectocotylus is both a reproductive and sensory organ, Harvard scientists and others have found. Octopuses are some of the most mysterious animals living in the sea. In research out today, however ...

It has been confirmed that octopuses can mate if their arms are within reach, even without seeing each other. This is because a male octopus's specialized "mating arm" can chemically recognize a femal ...

How do octopuses mate in the dark? A new study shows how the hectocotylus arm uses progesterone receptors to "taste" for a mate.

Scientists found that the male’s hectocotylus, the specialized arm for mating, is lined with receptors that can sense ...