It is one thing for two or more persons to perceive the same object, and it is quite another for two or more persons to perceive the same object together. The latter phenomenon is called joint attention and has recently garnered considerable interest from psychologists. However, contemporary psychological research has not succeeded in clarifying how persons can share perception of an object. Joint attention thus stands in need of phenomenological clarification. Surprisingly, this has yet to be offered. Phenomenologists have provided thoroughgoing analyses of perceptual experience, but have overlooked the perceptual experiences of co-perceivers; and, while a number of well-known phenomenologists have offered accounts of how one encounter...