Many animals build structures to aid their survival but very few build it from scratch. Scientists from the Monterrey Bay Aquarium Research Institute in the United States have decoded mucoid structures that animals build in the deep ocean for survival. The 'houses' built by these larvaceans could easily be called marvels of nature. The ocean's tadpole-looking master builders construct the equivalent of a complex five-story house that protects them from predators, and filters food for them, all from the snot coming out of their heads! When these homes get clogged, they build a new one, mostly every day. According to the study, they also filter and bind micro-plastics, taking it out of the water column and dumping it on the sea floor.