The Hyperbolic Crochet Coral Reef is a project by the Institute For Figuring in Los Angeles. According to their website, "The Crochet Reef resides at the intersection of mathematics, marine biology, handicraft and community art practice, and also responds to the environmental crisis of global warming and the escalating problem of oceanic plastic trash." This was a temporary exhibit at the Smithsonian's Natural History Museum in March/April of 2011.