Dive into the Planktoon game and you will instantly be surrounded by many green undefined creatures. This is plankton, which in real conditions is practically invisible to the human eye, but many marine inhabitants adore it. It is a nutrient medium and when its amount decreases, it immediately affects the eco system. You will help plankton live and develop, and you will also receive useful substances from it. They remain in the form of yellow blots and you need to click on them very quickly to pick them up. Along the way, catch hearts to replenish lives and do not click on the plankton itself, this will be considered a mistake and you will lose your heart in Planktoon.