SortStack #2031 — 2031-12-31

By speed · Order from slowest to fastest.

1. A swimming seahorse 1.5 m/h

   The dwarf seahorse is the slowest fish on record, fluttering a tiny fin dozens of times a second to barely move.

2. A king penguin waddling on land 2.8 km/h

   A penguin's waddle is surprisingly efficient, storing and releasing energy with each side-to-side rock.

3. A person walking 5 km/h

   The average person takes around 7,000 steps a day, walking the equivalent of several times around Earth in a lifetime.

4. A red fox 51 km/h

   Foxes may use Earth's magnetic field to aim their pounces, lining up on prey hidden under snow.

5. A powerful soccer free kick 132 km/h

   A well-struck free kick can swerve in mid-air as spin and airflow bend its path around a defensive wall.

6. A fired shotgun slug 1.9K km/h

   A shotgun slug is a single heavy projectile that turns a scattergun into a short-range, hard-hitting rifle.

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