Learn how hagfish slime could be used to make clothing, in this episode of Gross Science from NOVA. Hagfish are eel-like creatures that release slime when attacked. The slime is composed of mucus and threadlike fibers made of proteins, which clog the mouths and gills of assailants, making them unable to breathe. Hagfish slime fibers are like super-strong silk. Scientists think that if they can genetically engineer organisms to produce similar fibers, it could be an eco-friendly, high-performance clothing material of the future. This resource is part of the NOVA: Gross Science Collection.