Octopus

People of some cultures eat octopus. The arms and sometimes other body parts are prepared in various ways, often varying by species and/or geography. Octopuses are sometimes eaten or prepared alive, a practice that is controversial due to scientific evidence that octopuses experience pain. Octopus is a common ingredient in Japanese cuisine, including sushi, sashimi, karaage, stew, sour salad, takoyaki and akashiyaki.

Source: Wikipedia