So you'd like to know what naturally occurring inorganic material is tougher than spider web, yes? This week Professor Asa Barber of the University of Portsmouth's School of Engineering spoke up on the project. Also leading the project, Barber suggested, "Until now we thought that spider silk was the strongest biological material because of its super-strength and potential applications in everything from bullet-proof vests to computer electronics." Until now, of course. Their new findings suggest that the teeth of the snail-like Limpet is stronger than any material they've found before.