Do you know how cocoon silk fibres are formed?

Little yuck! The silk fiber is the saliva of the silkworm. It is a wonder of nature.

The silkworms become caterpillars, which processes the food they eat (mulberry silkworms eat mulberry leaves, and Eri silkworms eat castor leaves) and generate yards of uniform fiber that they exude from their mouths.

They use this fibre to build a place for themselves to hibernate in, till they transform into moths. These special 'houses' are called cocoons.

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