Why do they do this?

[JFleur]

My acans do this for a few days then go back to being puffy for a week or so then back to this.

 

[Flippers4pups]

My acans do this for a few days then go back to being puffy for a week or so then back to this.

If something touches mine, they do this.

 

[Phil D.]

pooping?

 

[JFleur]

pooping?

Im not sure... do they usually poop for 2 days?

 

[motortrendz]

Mine do this all the time.

 

[myzislow]

All my lps go through phases like this

 

[DSC reef]

Looks like normal micromussa lordhowensis buisness is going on. They look healthy so I would not worry. It's very common for some LPS to swell and deflate.