Clear bubble algae????

[no1bubba]

Is there such a thing? I have a lot of pink sponge growing on the underside of my frag rack and this evening I have found 20 or so clear bubbles. I touched on of them and it did not move, it felt like a saran wrap bubble. I had used chemclear for some cayno for the past 48 hours I found the bubbles after I had done the water change...cayno was only in an area about the size of a half dollar and is now gone. Bubba

 

[ripped tide]

You might have sea squirts or tunicates.

 

[no1bubba]

No, just looked at a picture of them both my bubbles are totally clear growing on top of pink sponge

 

[ripped tide]

Pic?