wow you were lucky as they are rare.. they dont live very long either because of the sun on thier skin and the fact that alot of them cant see too well... to see 3 like that all in one place is so cool.... I've only ever seen 1 here and it was being handraised.
Only ever seen one and that was in Kalbarri, WA. He was elusive but spotted him a few times over the couple of years I was there. Never thought to see 3 together. What a fantastic experience.