Id Help Please!!!!!

[mrdarieus]

I noticed last nite when I came in that my rock look like it had been tipped over? This morning I went to adjust it and while doing so I guess I must have stirred the sand!!! Lo and behold I see this crab(I guess) about the size of a nickel. It looked intimidating, it quickly buried itself in the sand!
Can anyone tell me what kind it is? I have a few mushrooms and an Anthia in the tank.
Thanks Darieus
Pics coming soon

 

[minireefer]

It is a rock tipping crap.No just playing.We need a little more info.Color size.Alot reef friendly crabs look intimidating.Just a guess would be a mole crab.

 

[Chris]

A picture would help also, most crabs are not reef friendly, so the quicker you identify it the better off you will be.