登場作品：
Shipwrecked
“I hope that thing is waterproof.”
“It's filled with sea treats!”
“Give Wolfgang your treasures!”
“That doesn't look like a reliable place to store things.”
“HOW DOES HE FILL IT?”
“Looks as though it's been sitting at the bottom of a reef.”
“Thanks for the stuff, guy!”
“It looks... rotten.”
“The chest hölds öfferings.”
“Let's look inside!”
“Booty-ya!”
“Any cold drinks in there?”
“Whut's in thar fer ol'Woodlegs?”
Octopus Chest（タコの宝箱）はYaarctopusに物を渡したとき交換として引き出してくれる特殊な宝箱です。アイテム欄は4つあり、渡した物に対応した報酬が入っています。中に入っているアイテムを全て回収すると再び海へと沈んでいきます。（つまりあえてアイテムを回収せずに残しておくことも可能です。）
Trivia[]
- When spawned with a console it will be empty, as the Yaarctopus is responsible for spawning the items in it.
- Octopus Chest can be moved by Sealnado.
- The Octopus Chest used to have 9 storage slots.