First, you need to know how to get under water and straight back up the quickest way possible when you run out of breath,. Here's how you do it: * Search your keyboard for the 'End' key. This key will send you below the water's surface. Holding this down determines how far you do go down. * Now look above the 'End' key. You should (hopefully) see the 'Home' key. This will raise you up to water level but keep in mind that you must hold this down until your breath bar disappears to ensure you are above the surface of the water. * Note: You can also dive by right clicking, holding, and moving your mouse downwards.