All Blue

All Blue (オールブルー, Ōru Burū) is a mystical sea of legend, rumored to be the only place in the world where the North, South, East, and West seas meet. In this legendary ocean there are said to be fish from each of the seas. Sanji strives to find this ocean of dreams. It is said that the All Blue is found in the Grand Line. In the English anime it's called the "Great Blue".