One critical feature of these octopuses is that they don't just die after mating (most species of octopus do)... Which opens up possibilities, like teaching their young skills they have acquired.

Life expectancy is 2 years. They can mate more than once, but not many times more.

Well, unfortunately - https://en.wikipedia.org/wiki/Octopus#Reproduction - a just-hatched young octopus doesn't stick around, but drifts away in the current.

Also worth a read - https://en.wikipedia.org/wiki/R/K_selection_theory