Scientists have found that male blue-lined octopuses inject venom and paralyse females during sex to avoid being killed and cannibalised by their much larger partners. At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

Now, researchers studying the octopuses have learned that not only do male blue-lined octopuses use their venom against enemies, but also against members of their own species — cannibalistic females.

Learn more about the mating of blue-lined octopuses - a treacherous ordeal involving sex, cannibalism, and sedation.