What is wrong with my polyps??

[xxnonamexx]

http://www.flickr.com/photos/59422509@N00/ Today is the first day where half are open and half aren't? Any ideas? Thanks

 

[xxnonamexx]

I don't understand why they aren't opened? very strange. Any ideas?? Just started toi happen

 

[gear-head]

My Polyps do this periodically, it doesn't seem to be anything bad, just a normal cycle of coral life.

They close for a day or two, then come back and are normal for weeks.

 

[melosu58]

Its called sloughing. Most corals do it.