What the species is and where it came from
A tsunami is not a species. It is a natural phenomenon: a series of long-wavelength water waves generated by sudden displacement of large volumes of water in oceans or large lakes. It has no origin in biology, no range, no habitat, no diet, no predators. It occurs globally but most frequently in the Pacific Ocean.
How it works, in terms someone would actually use
A tsunami travels across deep ocean at high speed as a series of long-wavelength waves, barely detectable until it reaches shallow coastal waters — where it slows, piles up, and surges inland as a rapid rise in sea level.
What it gets right
It correctly identifies water displacement — not surface disturbance — as the driver. It accurately describes the wave train structure, the tide-like arrival, and the amplification in shallow water.
What it does not
It does not originate from wind or gravitational forces. It does not appear as a single breaking wave. It does not spare distant shores — entire ocean basins can be affected.
What it changed
It changed how coastal hazard planning treats water movement: shifting focus from wind- and tide-driven patterns to sudden, basin-scale displacement events.
Who it is for, and who it is not
It is for coastal residents, emergency planners, marine engineers, and geophysicists. It is not for inland ecologists, botanists, or anyone expecting biological traits — because it has none.
Is it worth your time
Yes — if you live, work or travel near coastlines, especially in the Pacific Ocean. It is not worth your time if you assume it behaves like a breaking wave or can be ignored until it is visible.