The Saccodomus formivorus spider creates the strongest webs in the world. Endemic to south-eastern Australia, this species produces stronger webs than its congeners. Its wire measures 11 mm in diameter and 14 mm in depth. The unique elasticity and strength of this "superthread" has been studied by a team of scientists from the University of Melbourne. The conclusion is as follows: the silk fibers of the Saccodomus formivorus spider form a unique tangle in the world. This arrangement explains the robustness of the thread. Made in arachnids: the species Saccodomus formivorus uses its web to trap its prey but also to protect its eggs.