Traditional geography taught that the world has four oceans – Pacific, Atlantic, Ice and Indian. But the International Hydrographic Organization united the southern parts of the Atlantic, Indian and Pacific Oceans, creating a fifth addition to the list – the Southern Ocean. How many wonderful discoveries. It prepares an enlightened spirit. You are so confident in your knowledge. But science does not stand still. And not much of what we were taught in school has changed or supplemented. Remember this when you want to argue with someone about what you are so sure of.