Whoever named the sea cucumber after a vegetable didn’t give it enough credit. Yes, sea cucumbers are soft, warty tubes that scoot eyelessly along the seafloor. But they aren’t helpless. Some secrete a poison that’s deadly to other animals. And some, when threatened, shoot sticky threads out of their anuses to tangle up predators. When researchers collected these bizarre weapons and tested them in the lab, they discovered a material that’s unique among sea creatures.
The threads that sea