The Seeker Droid was a specialized droid designed by Galactic Solutions Industries

Galactic Solutions Industries Organization Manufacturers

during the Cold War and the Galactic War to dig underneath the surface of a planet and extract treasures buried there.
There were many designs of seeker droid in the galaxy, but few could match the versatility and resilience of those models nicknamed "moles" by their users. Subterranean seeker droids were built using the highest-grade durasteel components and programmed for the hazardous task of drilling through soil and rock, surveying the underground area and dredging up any items deemed valuable by its analysis parameters. Subterranean seeker droids had been used with great success in places as diverse as Tatooine

Tatooine Planet

's Dune Sea and Alderaan

Alderaan Planet

's Juran Mountains. An especially enterprising scavenger modified her seeker droid for deep-sea drilling and excavation on Manaan. A hungry Firaxan shark swallowed the device whole, but did not live long enough to regret it. The scavenger ate well for several weeks afterwards.