In the “Underwater World” application, your task is to fill the fields around the blots with the appropriate colors. Depending on how many blots the given field borders with with the given number, fill in the square – if the field borders with only one blot, we will cover it with green with the number 1, similarly to the other colors. To paint over a square, tap the color you want to use, and then check the boxes to paint over. There are three difficulty levels. Stages one and two differ in the number of blots, and in the third stage there is a time limit! To check the correct positioning of the colors, click on the circle with a triangle in the right part of the screen, to change the position of the blots, click on the button in the upper right part of the screen.