Silk, silkworm produces soft, shiny fiber. Silkworm is a caterpillar and produces fiber to weave its cocoon. People make yarn from the fiber and fabric textures are. Silk is produced by silkworms soft, shiny fiber. Silkworm is a caterpillar and produces fiber to weave its cocoon. People make yarn from the fiber and fabric textures are. Silk is very durable.