One of the delights of the Guardian is the “Corrections and clarifications” column which runs alongside the leaders. Not only is it an example of good practice (everyone knows that we journalists make mistakes, so why not make a feature out of a bug?), but it often makes enthralling reading. See, for example, this entry from July 14:

The photograph of a jellyfish shown in ‘Bathers beware’, page 9, yesterday, was of a Pelagia noctiluca and not, as we have been informed by the agency which supplied it, Auerlia aurita.