new discovery

[jeffaroo]

I have recently discovered a new THING in my tank. It looks like a white" milk dud" that has a sucker under it like a snail. it is kind of transparent with white markings on it. its about a 1/2" long and 1/4" wide . ever since i discovered it, i have found 2 more. any ideas ? ? ? I have a small Blood red alge patch and they only stay around that area

 

[Anonymous]

Can you snap a clear picture of it?

 

[Anonymous]

Does it have a small shell or is it soft bodied?