Science has discovered lots of animals who had evolved to defend themselves against people, like elephants being born without tusks to not attract the attention of poachers and mice that are resistant to poison. But one fairly recent discovery at the bottom of the Indian Ocean revealed an animal that seems to have taken its cue from humans to defend itself from natural predators.

Wired reported in 2015 on the scaly-foot snail, an ocean mollusk that lives around hydrothermal vents at the bottom of the sea and has had enough of its predators’ crap, so it makes its shell and its namesake scales out of iron. Iron sulfide, to be exact. Its foot, the part that sticks out of its shell with which it slithers along the ocean floor, is covered in small, protective iron scales, kind of like chain mail under armor. You could even catch one with a magnet. The snail uses a special type of bacteria to produce this super hard shield, but the bacteria help the scaly-foot snail protect itself from more than just crabs and other snails that would like to make a meal out of it.

The scaly-foot snail's iron shell protects it from other environmental threats as well

Chong Chen/Wikipedia, CC BY-SA 3.0 (Cropped and Resized)