To see an octopus in a dream means that you are entangled in a matter or difficult situation.
Dream dictionary: Octopus dream meanings
Symbolize the infernal spirits or their representatives among us. To dream with octopuses is a bad omen. It could mean an intimate desire and need to get rid of some unbearable person who is trying to monopolize us. It could also indicate that we are capable to get our purposes no matter what it takes.