Daphnia are mysterious creatures with amazing vitality despite their small bodies. As long as there is water, light, and the right temperature, they can be bred and raised without any special equipment or food, and because of their ease, they are popular for nature observation and learning.
This app, "Daphnia Simulation," uses the smartphone's light sensor to control algae reproduction and photosynthesis, allowing you to explosively multiply daphnia and raise them for long periods of time. It also reproduces the unique characteristics of daphnia, such as the "durable eggs" that they lay to adapt to environmental changes and the change in body color when they are oxygen-deprived.
In addition, it is designed to allow you to experience the depths of the natural world through their ability to adapt to harsh environments.

The operating instructions are available at the following link.
https://docs.google.com/presentation/d/13eAmjThmLLlW-jcFfpg_XkuYGSVHO8iXyVmylBTyXv0/edit?usp=sharing