資料： https://www.bristolaquarium.co.uk/blog/uncategorized/the-5-most-incredible-things-an-octopus-can-do/https://www.livescience.com/41924-smart-octopus-facts.htmlhttps://www.mentalfloss.com/article/62337/10-hidden-talents-octopus
http://www.nicovideo.jp/watch/sm39906669
