Yes, Anhata, a shark is a fish. It is very prehistoric and is from the family known as teleost (sp?). Unlike more modern fish they do not have bones, only cartilage. It is believed by some that they can live forever, never dying of old age. Now that's something worth researching...

Thanks for this list, I really enjoy it (apart from the inaccuracy about the American flag on the Canadain two dollar bill, which, as a proud Canadian, I've posted a response to).