Objects as common as the household Cichlid are made up of complex physiological systems, so small they are invisible to the eye. The view from an electron microscope reveals this little fish’s gill to be a forest of oxygen harvesting laminae swaying in the current above the main sinuses that circulate exchanged gasses back and forth between the body like subway tubes. We modeled this system from a microscopic image and printed it to explore what the perspective of a commuting blood cell - a world similar yet alien to our own, just inside the fish bowl.