Its always interesting to see what forms of objects photograph well. My parents recently visited Boston and a side trip took us to the Aquarium here. Quite expensive but worth it for the pictures I got. I think the two most impressive ones were a black and white shot of a jellyfish and a long term exposure I took of some nautiluses.
The latter was interesting. While the shot isn’t that great or sharp and you can barely make them out, it let me see something at the aquarium I’m thinking most people miss. The nautiluses are kept in a dark room area and don’t move much in the tank, so at most you might see some vague blurs that don’t move around much. With the long term exposure I was able to at least see some of the striping that occurs on their shells, and figure out that I wasn’t just staring at what might have been curved circulating pipes.