Unlike its descendant Cyclizar, who exhibits a strong preference for flat terrain, there exists no scientific consensus on what habitat Koraidon preferred in life. Fossils of this pokemon have been found everywhere from mountaintops to lakes and rivers, and paleontologists have been unable to determine where this pokemon ordinarily lived – with many suspecting, based on the ground-splitting force of the pokemon's fists, that some fossils were found in older strata than the ones in which Koraidon actually lived.
Although Koraidon was probably not ancestral to either Aerodactyl or Archeops, undeniable impressions of feathers have been found on multiple Koraidon fossils, and anatomical modeling suggests it was capable of either gliding or true flight. This may at least partially explain the distribution of Koraidon fossils, as it need not have actually lived in the terrain it was flying over at its time of death, but adaptations for swimming and rock climbing do suggest a remarkably wide distribution, comparable to Bibarel in modern times.
Koraidon may have been outcompeted on flat terrain by their more specialized descendant, Cyclizar, although their head-to-head weakness makes this questionable, and the advent of true flying pokemon likely drove Koraidon from the skies. The lack of obvious mountain or aquatic descendants, however, must be considered a mystery of evolution.
Engineers, both vehicular and genetic, have long been fascinated by this all-terrain pokemon, and many a Cyclizar rider has bemoaned the extinction of this remarkably versatile pokemon. The Miraidon project, attempting to create a mechanical counterpart, shows significant promise. The one Koraidon to appear in modern times, a temporal anomaly who carried its young trainer through the Paldean League, makes it clear that these pokemon could more than hold their own against contemporary fauna – a fact which adds yet another confusing twist to the puzzle of their extinction.