ID??? Nephthea or Sinularia

[sea of cortez]

Is this a Green Nephthea or Green Sinularia Or somthing else.

This is my first time posting a pic hope it works

 

[TealCobra]

I had to do some digging because I myself cannot tell. Apparently you have to test the coral to determine exactly what it is as seen here:
http://forum.marinedepot.com/Topic94064-9-1.aspx

 

[cfredallen]

Sinularia

Sinularia have a single thick stalk then branch just like your pic. I have 1 of those and is a fast grower.