what stinging sweeper tentacles look like: (pic)

[Sk8r]

Yes, corals change and do strange things at night, sometimes during the day: this great photo from the Photography forum really shows why you want to give them room. These tentacles sting.

http://www.reefcentral.com/forums/showthread.php?s=&threadid=1439259

 

[sufunk]

Great photo!

I have a red galaxea that puts out unreal sweepers at night. At least 6-8" long when they are waving late at night:eek2: