Is this a mushroom?

[zoalander1]

I found this guy attached to a small piece of live rock. Is it a mushroom? It looks sweet and is the size of a dime

 

[Jake_the_reefer]

Tis a shroom.. what kind? I have no idea haha

 

[Katrina71]

Pretty little guy.

 

[zoalander1]

Tis a shroom.. what kind? I have no idea haha

If anyone happens to know what kind, I'd love to know

 

[zoalander1]

Tis a shroom.. what kind? I have no idea haha

If anyone happens to know what kind, I'd love to know

 

[Hemmdog]

Ricordia Yuma. They are moody, yet beautiful.