I am just begining to explore this media. Maybe not so much to look a now... but it very interesting stuff, as these shapes were grown.
Mycelium is the fiberous root mass from which mushrooms grow. Found everywhere that plants live, it hides under the surface. While roots feed trees, mycelium in the wild is the network that connects forrests.
When mycelium is encouraged to colonize organic material and grow inside molds, it can be formed into shapes. The material is light, strong, heat-resistant, and biodegradable. Artists and engineers have used it to create everything from large structures to packing materials.