SortStack #3179 — 2035-02-21

By speed · Order from slowest to fastest.

1. The creep of a mountain glacier 175320 mm/year

   Glaciers flow downhill under their own weight like very slow rivers of ice, grinding valleys as they go.

2. A Komodo dragon walking 4.8 km/h

   The largest lizard alive, it has venom glands and a bite that can topple prey far larger than itself.

3. A migrating monarch butterfly 8 km/h

   Monarchs migrate thousands of kilometres to the same forests their great-grandparents left, guided by instinct alone.

4. A racing greyhound 76 km/h

   Greyhounds reach their top speed in just a few strides and spend much of a sprint completely airborne.

5. An ice hockey slapshot 178 km/h

   A slapshot flexes the stick like a spring, snapping stored energy into the puck for a brutal release.

6. The winds of a violent tornado 480 km/h

   The strongest tornado winds ever measured can strip bark from trees and drive straw into solid wood.

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