This entry was published at least two years ago (originally posted on July 9, 2003). Since that time the information may have become outdated or my beliefs may have changed (in general, assume a more open and liberal current viewpoint). A fuller disclaimer is available.
Best introductory sentence ever:
Scientists could have written an R-rated, gender-bending plot twist to Disney’s “Finding Nemo”: Clownfish have a natural ability to change their sex.
(via Prairie)