What is the loudest sound ever recorded on Earth?

who,and what recorded the volcanic eruption in 1883?

People might be thinking too literally of "recorded". When someone heard it, s/he wrote or recorded hearing it on paper. "on record" would be better.

who recorded it. where's the recording? question needs to qualified

Anna J, Geographic note: Krakatoa is west of Java. No one knows why the filmmakers did this.

spaceman, No recording Spaceman " Scientist believe it to be the loudest " So its only a belief.

I saw the movie Krakatoa East of Java as a young girl. The Tsunami depicted way back then onscreen scared me to death. Through my life I have had a repetitive dream/nightmare about tidal waves!

People believe they heard it but is that a guarantee it was that?

How exactly was it recorded?

spaceman, I believe it was heard in countries thousands of kilometres from the eruption. Australia was one of them