What is the longest lifespan of an octopus?

The lifespan of common octopus, which is most widely found species, ranges between 1 to 2 years. With an average lifespan of 3 years, the giant pacific octopus is the longest living octopus on the planet. Giant Pacific octopus live to be about four years old, with both males and females dying soon after breeding.

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Why are octopus lifespans so short?

Octopuses have a relatively short life expectancy; some species live for as little as six months. … Octopus reproductive organs mature due to the hormonal influence of the optic gland but result in the inactivation of their digestive glands, typically causing the octopus to die from starvation.