USOs – Unidentified Submerged Objects
Marine UFOs

“An Unidentified Submerged Object (USO) is an object detected underwater that cannot be immediately identified. While the term is often associated with unexplained phenomena, it can also refer to naturally occurring phenomena or man-made objects that are simply not immediately recognizable. The U.S. Navy, for example, classifies whales, sharks, and other sea creatures as USOs when they interfere with ship operations or sonar.“
- The new science of Unidentified Aerospace-Undersea Phenomena (UAP) with Kevin H. Knuth – Progress in Aerospace Sciences Volume 156, 1 June 2025, 101097 – ScienceDirect
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Unexplained Encounters:
USOs are reported to exhibit unusual speeds, maneuverability, and behavior, often defying known physics and prompting speculation about their origin.
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Potential National Security Threat:
Some experts, like retired Rear Admiral Tim Gallaudet, highlight the potential national security implications of USOs, particularly transmedium UAPs (Unidentified Aerial Phenomena) that can transition between air and water, according to supercarblondie.com.
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Limited Understanding:
There’s a lack of comprehensive data and research on USOs, partly due to the secrecy surrounding some encounters and the challenges of underwater detection and analysis, according to the War Zone.
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Possible Explanations:
While some USO encounters may be attributed to unknown or advanced technologies, others may be explained by natural phenomena, such as undiscovered marine life or unusual oceanographic conditions.
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The USS Stein experienced unusual sonar noise and damage to its sonar dome, with claw-like remnants found, potentially linked to a giant squid, according to NewsNation.
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A torpedo recovery boat snagged a large, unknown creature on a parachute, later identified as a megamouth shark, according to U.S. Naval Institute.
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A video reportedly shows an object plunging into the ocean from the air, according to Quartz.
- Ret. Rear Admiral Tim Gallaudet talks UFO’s, USO’s, Sol Foundation, China threat etc.. | Darcy Weir Kristian Harlof
USOs Rise From the Depths… & Rise of Retired Rear Admiral Gallaudet
- Former Naval Officer Raises Alarm About “World-Changing” Underwater UFO Captured on Video
- Watch: Eerie Glowing USO Spotted by Research Vessel in Gulf of Mexico