Silks are the toughest natural materials and spiders use them to build both its home and restaurant. Orb web shape diversified in a rapid, predictable fashion during evolution of endemic Hawaiian spiders. We aim to characterize their silk properties to test if biomaterials evolve as quickly and predictably as behaviors during adaptive radiation. This will provide important insight into the evolution of animal form and function and aid the development of spider silk-inspired fibers and adhesives.