Despite the long history of mankind, the underwater world has not been fully explored. Two thirds of the land is covered by seas and oceans, and no one really knows what is under water there. Underwater World will open some secrets to you, but in return will ask you for a service. Your task is to find the differences between the mirrored images. You will see beautiful mermaids floating on sea fur seals, you will have access to sunk ships, the holds of which are filled with treasure. Vigilance and attentiveness will help you quickly find the differences and move on to the next pair of images.