web angel is an euphemism. They thought it better not to emphasize the existence of data. data must be kept invisible, out of sight, out of mind. an angel will protect you, look after you.
dataplankton are born from the data. dataplankton drift in the streams. dataplankton cluster around the big servers like hydrothermal vents.
no one gets to see the mausoleum in the floor of a data center.
in any case, neither angels nor data have flesh.