This is a great video of Margaret Weitheim on TED talks - gotta see it its really interesting. Video here.
The Sydney Reef is a collaborative installation facilitated by In Stitches Collective. The exhibition took place at the Powerhouse Museum during Ultimo Science festival from the 21st to the 30th of August 2009. The Sydney Reef: Is a satellite of the worldwide Hyperbolic Crochet Coral Reef created by Margaret and Christine Wertheim of the Institute For Figuring in Los Angeles.