What Could It Be ?

Ok, I found some wierd looking organism or some sort of invert on the glass of my aquarium today. It is completely white, with no shells etc.. its quite small and has tiny microscopic antenna's. It has been moving around the aquarium glass all day and the clownfish find it amusing to nip at it. I was wondering if any of you guys knows what it could be and is it safe or not. I wouldnt say its too serious I just want to make sure .

My camera died
Ill try take some macro pics later on

 

At first I thought a chiton, but then again they don't have antennae. Do you know what stomatellas look like?

 

it looks slightly like this http://www.melevsreef.com/pics/0704/stomatella.jpg stomatella. Is it safe or should i get rod if it ?

 

Stomatellas are awesome hitchhikers. They're like racing snails

 

Wow!, iv noticed that. its so small yet has done about 5 laps around the tank since iv noticed it earlier on today.

 

They are good, they will eat algae on the glass and rocks. Consider them free CUC.

 

Anything like this? http://www.ronshimek.com/images/animals/platyhelminthes/Flatworm.jpg

These are harmless.

 

Yea found like 5 in my tank, they go faster than my nassarius snails lol