 IFF is a nonprofit organization through which the sisters produce their "Crochet Coral Reef" project, an endeavor they created as an artistic response to climate change and the decimation of the Great Barrier Reef in their Australian homeland.The project also responds to the problem of oceanic plastic trash.While engaging audiences around the world with these environmental concerns, the "Crochet Coral Reef" also serves as way to teach non-Euclidean geometry.