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

The deep-sea octopus Graneledone boreopacifica has the longest known observed 53 month egg brooding period.