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Octopus mating behaviors can be quite deadly. Many species are cannibalistic, making the entire prospect of mating dangerous, and female octopuses often die after laying one clutch of eggs. Their ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. This species (Enteroctopus dofleini) is the largest in the world, and ...

COURTESY SUSAN SCOTT A day octopus on Oahu’s North Shore. In one Tahiti study of the day octopus, Hawaii’s most common species, a male reached out and fertilized the same female 12 times in about ...