Life Web was a sense-based Force power which allowed Force-sensitives to sense the general direction and approximate distance of large concentrations of members of a specific alien species, such as Humans or Rodians. It could not detect populations of less than 100,000. A user would have to be familiar with the alien race in order to detect members of that species, and he or she could only sense one species at a time.
Dev Sibwarra learned this power from his mother Ydra Kilwallen Sibwarra.