The Sponge-Tracker is an invention made by Sandy that appears in the episode "What Ever Happened to SpongeBob?"


It is a light olive-green device with a light tan button, a red dial, and a light gray antennae. It is used to track sponges within a mile radius.

Role in episode

Sandy invents the tracker after SpongeBob goes to New Kelp City. However, Squidward, not wanting SpongeBob to come back, purposely destroys the device with a hammer, but claims that he dropped it, even though it is obvious that he did not.