After spinning for two days and two nights, the silkworm will have produced a single thread measuring up to 5,000 feet [1,500 m] in length. That is about four times the height of a tall skyscraper!
Pärast seda, kui siidiuss on kaks ööpäeva kookonit kudunud, on ta eritanud 1500 meetri pikkuse niidi, mis on neli korda pikem kui kõrged pilvelõhkujad.