Creature ID

[Rham1281]

I've got a 10 gallon frag tank that's been up and running for nearly 2 months now. Inside are just some basic softies:
GSP, Eagle Eye ZoaK, Kenya Tree, and a few others.

I added some new coral from my LFS a couple days ago and now this little blobish critter is cruising around my glass.
I had originally thought it was the start of some coralline algae but it makes its way around the tank.

Any ideas?

UPDATE:
Upon closer inspection, there seem to be a few more on this green coral (ID help with that would also be appreciated )

 

[SpyC]

Type of flatworm

 

[Rham1281]

Awesome. Thanks. I'll get these out.