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Micro World

How long is Chaos carolinense?

Chaos carolinense is about 1 mm long.

What is measured: giant amoeba, extended length

Chaos carolinense (1 mm) drawn to scale beside a grain of sand (500 µm) and a raindrop (2 mm)
Drawn to scale, from left to right: Grain of sand (500 µm), Chaos carolinense (1 mm) and Raindrop (2 mm).

Compare

How big is that, really?

  • About 2× the width of a grain of sand
  • About 2 would fit across a raindrop
  • About 7 would fit end to end along a grain of rice
  • About 8.7× the width of a human egg cell
  • About 14× the width of a human hair

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Facts about Chaos carolinense

Chaos carolinense is one of the largest known amoebae, visible as a moving speck to the naked eye.

Source: Protist Information Server - Chaos carolinense

Micro World

NameSizeCompared with Chaos carolinense
Human Adipocyte100 µm0.1×
Euplotes100 µm0.1×
Human Cardiomyocyte100 µm0.1×
Human Smooth Muscle Cell100 µm0.1×
Didinium150 µm0.15×
Coscinodiscus Diatom150 µm0.15×
Human Purkinje Cell250 µm0.25×
Blepharisma japonicum300 µm0.3×
Chaos carolinense1 mmthis page
Nostoc Colony5 mm (0.2 in)5×

Test your sense of scale

Which is bigger: Chaos carolinense or Blepharisma japonicum?

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