deepdan
"This act of worship is called `deepdan', and the entire lake is illuminated" by candles.
So that could be why I can't get deepdan username on some systems like yahoo.
deepdan started as a name for me in forums back in the mid 80's to early 90's.
At the time I was considered a deep (air) diver.
Now the trimix community dives much deeper but I keep deepdan out of amusement.
I still prefer that 27-55m range though.
Which is where some of the best diving locally is.