I took a trip to the zoo, under the pretense that I was going to draw there. Well, I was, but in fact I also just like to walk around there and see all the animals. The zoo had some wonderful aquariums. Fish are hard to capture in a drawing however, they're constantly on the move.
Whenever I found a creature interesting enough, and more importantly, willing enough to hold still for a little while, I'd sit down and do a quick sketch. I'm a slow drawer, I like to take my time, but you have to be fast for these kind of drawings. It's good excercise.