The local fiber guild I belong to did a program on hyperbolic crochet and coral reefs. I made my own coral reef a few years back when I learned about this remarkable subject and project. The year I crocheted these little darlings I thought some of my friends were ready to certify me to the funny farm. They are addictive once you get started. Every time I found a new yarn I had to make another and another...  For more information check out http://www.theiff.org/

By the way that is Sponge Rob, no pants, Bob's evil twin.

and even a star fish