is the normal for anemones

[rtspeed]

These were little guys that came on my live rock, but at night they seem to pull themselves in there foot, is that normal.
http://www.flickr.com/photos/17814593@N04/2222524464/
http://www.flickr.com/photos/17814593@N04/2221732797/

 

[rcoultas]

yes that is normal behavior for most anenomes