What is a spiral?

What is a spiral?

A spiral is a curve that winds in a continuous and gradual widening around a central point.

Spiral

Fossil shell

It is a coil, whorl, or swirl.

Animals that often have a spiral shape include shells and snails.

Caucasus Helix Snail

Caucasus Helix Snail

 

Photographer: Martina Nicolls

Martina Nicolls: SIMILAR BUT DIFFERENT IN THE ANIMAL KINGDOM

 

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