Aquaman (1967)

S1E10 The Deadly Drillers

Underwater tremors are wreaking havoc across the ocean. Aqualad is nearby when Aquaman arrives to uncover the source of the disturbances. He discovers that the chaos is being caused by diamond drills operated by the Molemen, a group of mutant beings. Aquaman is soon taken prisoner by the Molemen, while Aqualad rushes to alert Atlantis and uncovers a plan for an impending invasion. Will Aquaman manage to free himself and protect Atlantis from the looming threat?