The outline of life’s existence is not the boundary of the physical body, but something ambiguous that also includes the environment continuous with it. As long as life is alive, it dissipates energy and moves the surrounding environment, such as the air. This work depicts the existence of a flock of birds through the energy the flock has given to the world. The existence called “I” is the mind, the body, and the environment continuous with them. A pebble, and things that humans have made up to now, have stable structures in and of themselves. Life, however, is different. A pebble will continue to exist even if it is placed in a sealed box cut off from the outside world, but life cannot maintain its existence when placed in such a closed box. Life is like a vortex born in the sea. A vortex is an existence within a flow, and the boundaries of its existence are ambiguous. In fact, a vortex is in a steady state, yet continues to writhe and appears like a single powerful living being. A vortex is not something that maintains a stable structure on its own; it is created by water continuously flowing from outside the vortex to inside it, and from inside to outside, and its structure is sustained by that flow. Life, too, takes in matter and energy from outside as food, releases matter, and dissipates energy outward while building an ordered structure. In other words, the structure of life is formed not by life itself, but by the environment continuous with it. Life is a miraculous phenomenon that arises in the flow of an open world, and like a vortex in the sea, it exists within an infinite continuum, with ambiguous boundaries to its existence. To be alive is to continue dissipating energy into the world and to remain continuous with the world. Work page: https://www.teamlab.art/jp/w/dissipative_birds/himeji/