Octopus is a low calorie protein source that is both nutritious and filling. It is also full of vitamins. Octopus is low fat, but high in iron. It also contains selenium, which helps you metabolize protein and is an antioxidant. Vitamin B-12 is also found in octopus. B-12 aids in the production of red blood cells. Octopus is  light, tender and really tastes so yummy.