How does it's eight arms in octopus obtain food

If I'm not mistaken, they use their arms to grab their food such as small fish. Then they rip it apart and feed it to themselves to their beak like mouth, which is under and in between their arms. They push the food into their mouths. In case I am not correct, you should search on PBS for the nature channel episode about octopi. I'm sure it'll be there. Good Luck!

True. you know, tools like shovels.