In Ufology, “transmedium” describes any craft (any UFO) which is spotted while in flight passing from the air and into the water, or else from water into air. Once the UFO is in the water, it is then classified as a USO, or an Unidentified Submerged Object. Conceivably, a transmedium craft can (by
definition) likewise pass from the air and into outer
space, and also pass through other permeable substances as
lava,
mud, or sand. However, virtually
100% of all accounts of transmedium behavior have described transmedium craft as passing back and forth between air and water.
Witnesses who have
seen transmedium craft passing from air to water and (vice versa) universally claim the craft they saw made the transition from one medium to the other smoothly, seamlessly (neither accelerating nor decelerating), and exhibited no degree of compensation or recalibration to its velocity or trajectory.
The passengers on the yacht all looked up and beheld a UFO
flying across the sky above the open sea. It seemed at
first to the onlookers to be heading downward into what they assumed would be a controlled crash or a water landing. But then they saw the UFO
pierce the water and disappear beneath the surface, proving itself to be a transmedium craft.
