I watched “My Octopus Teacher” last night. It was so moving.
John Bowlby theorized that Humans like other primates and mammals seek out proximity to the mother for evolutionary reasons, namely to seek safety. This makes perfect sense. You can build a theory of love, connection, and affection solely on the basis of the evolutionary benefits of proximity explained by attachment theory.
In the film, Craig Foster the main protagonist, states that the highlighted kind of octopus has no relationship with mother or father.