Sea star tube-foot travel
Sea star tube-foot travel is the movement speed of a sea star as it uses its tube feet to glide over surfaces.
How big is it?
0.0003 m/s
Travel speed · representative
Typical recorded range: 5 × 10⁻⁵ m/s to 0.001 m/s.
A little perspective
About 3 times the representative charge-carrier drift speed of Electron drift in household copper wiring.
Electron drift in household copper wiring: This refers to the slow average movement of electrons through copper wire when an electric current flows.
Measurements, assumptions & sources +
Sea star tube-foot travel
A representative 0.3 mm/s travel speed for a sea star using coordinated tube feet. Species, size, substrate, water conditions and motivation change the pace.
Defined examples — our methodology
The marked travel speed is calibrated. Unmeasured illustration details are representative.
Electron drift in household copper wiring
A representative 0.1 mm/s electron drift speed in a current-carrying household copper conductor. Wire area, current and carrier density change the value; the electrical signal propagates far faster.
Defined examples — our methodology
The marked representative charge-carrier drift speed is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 0.0003 m/s
For comparison, this page uses travel speed. This is labelled representative; the central value is useful for comparison, while real values or measurement solutions can vary. The recorded range is 5 × 10⁻⁵ m/s to 0.001 m/s.
A representative 0.3 mm/s travel speed for a sea star using coordinated tube feet. Species, size, substrate, water conditions and motivation change the pace.
The identifying illustration and the numerical comparison remain separate. How calibrated comparisons work →
Recorded properties
Sea star tube-foot travel dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 0.0003 m/s | 5 × 10⁻⁵ m/s to 0.001 m/s | representative |
Around this scale
Go smaller. Go bigger.
These links use compatible speed records, ordered around the selected value.
Nearest lower value · MotionElectron drift in household copper wiring0.0001 m/sThis refers to the slow average movement of electrons through copper wire when an electric current flows.Nearest higher value · MotionGarden snail relaxed crawl0.0008 m/sA garden snail relaxed crawl describes the slow, steady movement of a garden snail as it glides along a surface.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
There’s always another scale
Follow your curiosity.
MotionElectron drift in household copper wiring0.0001 m/sThis refers to the slow average movement of electrons through copper wire when an electric current flows.
MotionSnail crawling0.001 m/sSnail crawling is the slow movement of a snail as it glides along a surface using its muscular foot.MotionRed blood cell in a capillary0.001 m/sA red blood cell in a capillary refers to an erythrocyte moving through the body's smallest blood vessels as part of microcirculation.MotionGarden snail relaxed crawl0.0008 m/sA garden snail relaxed crawl describes the slow, steady movement of a garden snail as it glides along a surface.MotionSperm cell swimming5 × 10⁻⁵ m/sSperm cell swimming refers to the speed at which a human sperm cell moves through fluid using its tail for propulsion.MotionBanana slug crawl0.0015 m/sBanana slug crawl refers to the speed at which a banana slug moves across a surface using muscular contractions and mucus secretion.MotionEarthworm surface crawl0.005 m/sEarthworm surface crawl is the rate at which an earthworm moves along the ground by extending and contracting its body segments.MotionSlime mould migration1 × 10⁻⁵ m/sSlime mould migration is the rate at which a motile stage of slime mould advances across a surface in search of food.