noun
Loanword from English; used for the animal, often in contexts like diving, aquariums, or Western cuisine. The native Japanese word タコ is more common in everyday speech.
See also: タコ
ダイビング中に大きなオクトパスを見た。
I saw a big octopus while diving.
noun
octopus regulator; backup second-stage diving regulator
Diving equipment term; refers to the backup second-stage regulator, often brightly colored and called an 'octopus' because of its multiple hoses.
緊急時に備えて、オクトパスはすぐ手の届く場所に取り付けてください。
In case of emergency, please attach the octopus regulator where you can easily reach it.