This notebook cover design theme is about Organ Garden.
I chose lung, heart and kidney as the three main concepts, then combine different animals in different atmospheres: Ocean/ underwater, land and Skyland, to show intimacy between nature, humans and animals

The lungs are the primary organs of the respiratory system in humans. These lungs
are filled with animals and surrounded by ocean and other creatures, which means
that organs and animals are connected with each other.

The kidneys are two bean-shaped organs found in vertebrates. These kidneys are filled with animals and grow on the land, sometimes they can bring water to the plants, soil, and animals.

The heart is a strong muscle that pumps blood to your body. This heart is filled with animals and they float in the sky, it is connected with the sky and land, which is absorbing energy from sunshine and land plants.