The five most popular content-specific questions about Octopus! Season 1, based on viewer interest and reviews, are:

1. How does the series balance scientific documentary elements with artistic and abstract visuals?
2. What unique behaviors and life cycle details of the octopus are highlighted in the show?
3. How does Phoebe Waller-Bridge's narration style contribute to the storytelling?
4. What role does Tracy Morgan's commentary play in the tone and accessibility of the series?
5. How many episodes are there, and does the series feel complete or leave viewers wanting more?

These questions reflect curiosity about the show's style, educational content, narration, and structure rather than plot or ending specifics.