At around 3pm on December 29, 2010, the water at Goldstream Park in Victoria suddenly turned neon green. They did some testing, and apparently someone dumped something called "Fluorescein" in the water.

Here are my photos from the day: http://www.flickr.com/photos/shaynekaye/sets/72157625577498109/

My friend, Tyson Elder, took some photos as well: http://www.flickr.com/photos/tysonelder/sets/72157625703184264/

I've decided to re-enable comments, despite common sense telling me it's not a good idea...you're now free to resume making such brilliant insights as "FAKE AND GAY LOL", saying it's part of some kind of government conspiracy, or posting biblical quotes saying it's related to all the recent mass bird/fish deaths and a sign of the apocalypse. Enjoy...and remember: http://xkcd.com/481/

Deutsch Erläuterung : http://de.wikipedia.org/wiki/Fluorescein