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 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 ...

To celebrate Valentine's Day, officials at the Seattle Aquarium thought it would be cool to allow visitors to watch a live mating between two octopi. The annual octopus mating event is open to the ...

Along the rocky shores of eastern Australia, a small brown octopus is unassuming as it blends in with its surroundings. When the octopus is scared or hungry, however, it becomes one of the most ...

The nearly-see-through creatures were intertwined, which could mean they were mating. Or fighting. It was taken on an undersea expedition, which may have uncovered four new octopus species. A deep-sea ...