Antarctic krill
Antarctic krill (Euphausia superba) are small, shrimp-like marine crustaceans that serve as a vital food source for many Antarctic animals.
Also known as: Euphausia superba
How big is it?
6 cm · defined adult body length
Also 2.362 in
Defined adult body length · representative specimen
Typical recorded range: 5 cm to 6.5 cm.

A little perspective
Antarctic krill vs Lacrosse ball: length comparison
The regulation-range diameter of a lacrosse ball is about 1.06 times the adult body length of an Antarctic krill.
Antarctic krill (Euphausia superba) are small, shrimp-like marine crustaceans that serve as a vital food source for many Antarctic animals.
A lacrosse ball is a solid rubber ball used in the sport of lacrosse, designed to meet official standards for play.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
Measurements, assumptions & sources +
Antarctic krill
Defined adult body length: 6 cm; representative specimen; range 5 cm–6.5 cm.
A defined adult Antarctic krill (Euphausia superba) 6 cm long with a 1.5 g wet mass. Body length excludes the antennae; sex, maturity and feeding condition affect size.
Australian Antarctic Program — Antarctic krill
The marked defined adult body length is calibrated. Unmeasured illustration details are representative.
Lacrosse ball
Defined regulation-range diameter: 6.35 cm; specified; range 6.27 cm–6.47 cm.
A defined regulation-range lacrosse ball 63.5 mm in diameter and 145 g. The selected values lie within World Lacrosse equipment limits.
World Lacrosse — Equipment and ball standards
The marked defined regulation-range diameter is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 6 cm
We compare the adult body length of an Antarctic krill. This is a representative comparison value; individual specimens or conditions can vary. The recorded range is 5 cm to 6.5 cm.
A defined adult Antarctic krill (Euphausia superba) 6 cm long with a 1.5 g wet mass. Body length excludes the antennae; sex, maturity and feeding condition affect size.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 6 cm | 5 cm to 6.5 cm | representative specimen | |
| 1.5 g | 1 g to 2 g | representative specimen |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valueLiving thingsCleaner shrimp5.5 cmDefined body lengthA cleaner shrimp is a marine crustacean that removes parasites and dead tissue from fish, forming mutualistic relationships.
Around the same scaleContainers and capacityEspresso demitasse6 cmDefined exterior heightAn espresso demitasse is a small porcelain cup used for serving concentrated espresso coffee.
Nearest higher valueSport and equipmentLacrosse ball6.35 cmDefined regulation-range diameterA lacrosse ball is a solid rubber ball used in the sport of lacrosse, designed to meet official standards for play.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- Australian Antarctic Program — Antarctic krillAntarctic krill anatomy and adult length scale; the atlas selects an explicit adult specimen.
There’s always another scale





