📍 Sweden, Baltic Sea 📅 1992 🔍 Naval Sonar, Underwater UAP

During a routine patrol in the Baltic Sea, the Swedish Navy’s sonar system detected one or more unidentified objects moving at incredible speeds on the seabed. The military deployed multiple vessels and helicopters to track them.

The objects could dive into extremely deep trenches and move at high speeds without any noise. The Swedish Navy recorded the incident as “Underwater Unidentified Phenomena.” This case proves that UAPs not only appear in the air but can also emerge in water, known as transmedium vehicles.

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📚 Reference: Swedish Navy Archives, UFO Research Literature