Male blue-lined octopuses inject a powerful neurotoxin into the hearts of females before mating to avoid being eaten, according to a new study. The males have evolved to use a venom called ...

The blue-lined octopus (Hapalochlaena fasciata) is only a few centimeters long, yet it may be one of the most dangerous marine animals on Earth. That's because, as part of the blue-ringed octopus ...

This octopus can brood its eggs for nearly four years without eating. Here’s how this biological extreme has reshaped how scientists view life in the deep.

It’s an octopus-eat-octopus world. Scientists have discovered that when mating, male blue-lined octopuses will inject a powerful, incapacitating neurotoxin into the hearts of female octopuses — to ...

It’s not uncommon for sex in nature to include a bit of violence. But in the shadowy tide pools and coral reefs of the Pacific, an extraordinary duel is unfolding. The blue-lined octopus ...

Add Yahoo as a preferred source to see more of our stories on Google. A beloved octopus is entering the last stage of her life in Long Beach, and will spend the remainder of her days caring for eggs ...