Scolymia or cynarina

[TheNomadRhodes]

I've had this fat guy for about a year now. when I got him they told me it was a Scolymia but I thought it looked like a cyna to me can you help me clear this up thanks its hard to see the size of him in this pic those mushrooms are about the size or a little bigger then silver dollars

 

[GMAX]

Scoly. Cynarina are translucent but scolys are opaque.

 

[raoul]

Nice color too!
To me, cynarinas look more "bubbly" too, but that could be just me