Id some sort of leather/colt coral

I got this as a freebie with some purchases I made a few months ago. I cant remember the name the girl told me, but i think it started with s. It is neon green when disinflated and slightly green when open. Looks alot like a colt but ive never seen a colt with this greenish color.
Thanks

Here a 2 pictures

 

sinularia

 

WOW! That was fast. Thanks alot

 

no prob bro, I have a nice neon green tongan sinularia

 

Looks like a nepetha to me.

Doesnt sinularia have a longer wavyer look to it ?

I may be wrong though, please correct me if so

 

their all in the same family.nepthia,sinularia,silk coral,kenya.i think some others as well

 

looks like my pink colt coral