Deep.io is an awesome .io game online about the underwater survival. You take the role of a marine creature and your objective is to survive in the dangerous oceans. First, you have to choose your sea animal, then you can start playing. Navigate the creature around the water and try to eat as many pieces of food as possible. Be careful and avoid being eaten by deadly predators. You will have to compete against enemy players, who will try to eat the food as well. Battle against the players and try to become the most successful of them all! Point your mouse cursor into any direction and the creature will follow it. Animals with the special ability to walk across islands will jump to them if you click using your left mouse button. Click while in the see to use a speed boost, if you have anything left in your boost bar. Animals with any special skills will perform them instead of speeding up. Can you survive the deep waters in Deep.io online?