When a Snail Becomes Iron Man — The Armoured Marvel of the Scaly-Foot Snail 🐌 Meet Chrysomallon squamiferum, the scaly-foot snail — the only animal known to build armour from iron. Living around super-hot hydrothermal vents in the Indian Ocean, this deep-sea gastropod armours itself with a three-layer shell and iron-sulfide–infused scales on its foot, giving it a natural exosuit worthy of Tony Stark. 🔍 What makes it extraordinary: Its shell has three distinct layers: an outer coating of iron s