404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=https%3A%2F%2Fwww.whatsthatfish.com%2Fbrowse%2Ftags%2Flimit%2Fnodules%252CSea%2BStars%252Cyellow%252Cbars%252Cbrown was not found on this server. That’s all we know.