Every living thing has adapted to its habitat over tens of thousands of years.
Diverse animal life can only survive with clean water, soil, air and plants.
Butterflies are said to be an excellent barometer of nature. They live in many places, including forests, grasslands and wetlands, and if they disappear, we can tell that the environments of forests, grasslands and other areas have changed.
Currently, 240 species live in Japan. However, a quarter of these are on the path to extinction.