Last week I linked to a post Caleb wrote about the popularity of Aquaman and Namor. Of course, the context of that post had to do with Michael Phelps and which underwater superhero people most easily connected him with.
I haven't said a whole lot about Phelps and I probably should have. Caleb's got some great links about how Phelps is actually a mutant perfectly designed for underwater speed. The only thing Phelps is missing is webbed fingers and flippers.
Here's one more link for the pile though: John Kovalic's Dork Tower on the subject.
(Okay, two more links for the pile, though this one's not Phelps related. Jon Hex has a great overview of the careers of both Aquaman and Namor. He proclaims Namor the better underwater character and I would've agreed with him before I read the post, but now I think that in all DC's not knowing what to do with Aquaman, they've actually made him the more versatile and interesting character. That's a rookie's perspective though. I haven't dug into the actual adventures of either yet.)