Researchers have found Spider-Man would need much larger hands and feet if he were to scale walls in real life. That's because the superhero – and any human for that matter – would need a much larger body surface area equipped with far more sticky footpads to support his weight. That's why geckos are the largest animals able to scale smooth vertical walls.
Mussels secrete proteins from their feet that allow them to cling to rocks in the face of powerful waves. By mimicking this technique, researchers have created a simple synthetic material that can prime and fuse two surfaces underwater.
Researchers took a closer look at how exactly frogs snatch their prey up in one quick motion. They found that the tongue muscles are actually similar to sticky tape.