Every message is read by one person, and there is no support desk behind this page. That means a reply is not instant, and it also means a correction goes straight to the person who can make it.
If you are reporting a mistake on a page, the most useful thing you can send is the address of that page and what you saw instead. If you are writing about a logbook account, send the email address you signed up with.
Two addresses, and it does not matter greatly if you pick the wrong one. Both are read by the same person.
A page is wrong, a species is misidentified, a size or a location does not match what you have seen, or you have a question about the site.
Anything to do with a logbook account: you cannot sign in, the confirmation mail did not arrive, or a dive you entered is not showing.
This does the same thing as writing to the addresses above. Nothing is stored beyond the message itself, and the address you give is used to reply to you and for nothing else.
Corrections are handled the way the editorial policy describes: the change is noted at the foot of the page rather than made quietly.