Everyone,
Here are a couple pics of my "thing on the glass". Props to who ID's this one. The only thing I can think of is a baby Urchin. I have two of them. They have both about doubled in size in the past couple weeks. They are still very small. Here is a blown up picture... it's kind of blury sorry about that.
Here's another pic of it zoomed out. Where's Waldo here?? LOL. He's about one inch down and two inches left of the snail. You can see better detail with the below picture rather than the above. It has a ball in the center with it looks like spines or tenticals that go all around it. They aren't stiff cuz I can see them moving in the current.
Yeah... I know it's realllly small. Anyways, here is one more blown up picture that didn't turn out that great. Let me know if you guys have any ideas!