In 2011, a team of Swedish treasure hunters stared at a sonar image of a 200-foot, perfectly circular object resting on the barren Baltic seabed. It looked suspiciously like a sunken UFO, and the world's tabloids were only too happy to draw the Millennium Falcon right on top of it.

This episode tracks how a routine shipwreck search became a global mystery, and how science quietly dismantled it. We follow the Ocean X dive team, the geological reality of the rocks, the faulty equipment behind the famous image, and the financial incentives that kept the mystery alive long after the facts were in.

• How pareidolia and tabloid-drawn outlines led the public to see a spaceship in a blurry sonar smudge
• Why recovered samples were ordinary granites, gneisses, and sandstones shaped by Ice Age glaciers, not exotic alien alloys
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