Trans-medium UAP are objects reported to move seamlessly across different physical mediums, most notably between air and water, without slowing or apparent structural adaptation.
What is trans-medium travel?
It refers to an object operating in air, then entering water (or space) and continuing without the drag, cavitation, or design changes such transitions normally require of human craft.
What evidence exists for trans-medium UAP?
The 2013 Aguadilla, Puerto Rico thermal video shows an object descending into and re-emerging from the ocean. The 2004 Tic Tac was reported hovering over a sea disturbance, and Navy "USS Omaha" footage depicts a sphere descending into the water.
Why is this capability significant?
Trans-medium performance is among the most difficult UAP characteristics to reconcile with known engineering, making it a focal point of scientific interest.