bed here wrapped in a black plastic garbage bag, just discarded like a piece of trash resting along the rocks here. this is deer island. just east of boston's logan airport. there as you get here by car or by boat. authorities don't have a clue who the child is. they're calling her simply baby doe. they also don't know who put her here or when. but they suspect she hadn't been dead very long. a make shift memorial with teddy bears, now sits by the shore. how disturbed are you by this discovery here? >> absolutely disturbed. you know it's just a little kid. never had a chance in this world. you know? it's terrible. >> reporter: the national center for missing and exploited children generated this computer image of what she may look like. long, brown hair sweet chubby cheeks and big brown eyes. heartbreaking and haunting. who ever left her here may have done so after dark to avoid being seen.