GCA Completely Burying Itself in DSB

[NACLH2OFOOL]

I've had my 8" Green Carpet for about 4 and a half months. It eats well, has good color and a nice tight mouth. It has occasionally moved but for the most part stays in one place. Today for some reason, it completely buried itself in the DSB. I spent 5 minutes looking for it before I spotted a small portion barely exposed near the rocks. I have never seen it do this before. When I unearthed it, it expanded to about half its normal size.

I have a 120 gallon tank and all of the water parameters are well within specs. I just double checked them to make sure.

Has anyone ever heard of this before or witnessed it?

 

[OrionN]

It is normal for S. haddoni to bury his foot in the sand. He will reach out and open up on the surface of the sand. I am sure he will open-up and will be fine tomorrow. Leave hime alone. Don't unearth him.
Keep us up date. A picture would be great.

 

[NACLH2OFOOL]

Thanks Minh. Mine has always kept his foot well buried in the sand but I have never seen him submerge his whole body under the sand like he did today.