Transmedium
From the UAP Encyclopedia, the open encyclopedia of UFO and UAP history · 📖 Term
Contents 5
| Type | Term |
|---|---|
| Also known as | transmedium, trans-medium |
| On the Timeline | 4 events, 1952–2017 |
Transmedium describes an object said to move between different environments — for example from space into the atmosphere, or from the air into the sea — without apparent difficulty. Reports of such behaviour are a recurring feature of modern UAP accounts, and since 2021 the term has appeared in U.S. law defining unidentified anomalous phenomena.[1][2]
In law
The fiscal 2022 National Defense Authorization Act broadened the official meaning of UAP to include objects in space and under water. The fiscal 2023 act set out three categories: airborne objects not immediately identifiable; transmedium objects, observed moving between space and the atmosphere or between the atmosphere and bodies of water; and submerged objects not immediately identifiable. The Pentagon's All-domain Anomaly Resolution Office (AARO) describes its work as covering airborne, seaborne, spaceborne and transmedium detections.[1][2]
Reports
UFO literature has long included accounts of objects entering or leaving water. Among modern accounts, retired rear admiral Tim Gallaudet has said he saw footage of unidentified submerged objects as well as UAP while on active duty.[3]
Caution
The term describes what witnesses or sensors seemed to show, not a confirmed physical crossing from one medium to another. U.S. officials said in 2022 that they had seen no clear indications of transmedium activity by UAP in more recent reports.[1]
On the UAP Timeline
- Submarine encounters study (1952) (24 April 1952) — Air Force and Navy intelligence study nine undersea UAP encounters reported by U.S. submarines.
- Kevin Thomas and the Nimitz black triangle (1991) — A Nimitz petty officer says he saw a huge black triangle rise out of the ocean.
- Underwater Tic Tac near Haiti (January 2010) — A Navy sailor sees a Tic Tac-shaped object under the water near Haiti.
- Navy underwater-object program claim (2017) (19 September 2017) — An astronomer with Navy contracts claims the Navy runs a secret underwater-object project.
References
- "Pentagon changes UAP terminology as it looks to investigate unexplainable sightings across all domains", DefenseScoop (19 Dec 2022) · defensescoop.com · archived copy
- "Unclassified Summary: Unidentified Anomalous Phenomena", Department of Defense (Jan 2024) · media.defense.gov · archived copy
- Tim Gallaudet — Wikipedia · en.wikipedia.org · archived copy
This page was last edited on 29 October 2026. Articles are written in our own words from the sources listed under References; disputed claims are attributed to the people who made them.
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