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 ...

The love life of a male blue-lined octopus is tough. Like praying mantises and widow spiders, a female blue-lined octopus will often kill and eat the male after mating. It's just a circle of life for ...

(CNN) — 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 ...