what is this?

Hi this was on one of my LR's when I bought it can someone take a guess at what it is? it is about the size of a small pee. The pic is not that good but it is throught a magnifying glass. the brown areas are purple and some floresent green under the attinic. It has little cup like feet sort of greeny yellow in color. also I have some very small hard, white, egg like things on some of my rock and glass I think maybe snale. when they hatch they resemble a clam but nothing left in side.
removed pics.

thank you,
Bill

[argan]

does the first thing move around or is it stationary?

the second pic is definetly snail egg capsules

[tlo]

1st one looks like a bleached mushroom. Not sure about the 2nd one.

I don't believe that it moves of it own acord, I believe that it will let its self become unatached from an object and then let the curent do the moving. It looks like it has a little hole on its top when it is in a low curent location and lost of light it get little bubbles on top not like a anemone sort of like a fox coral I believe thet are called.
It is very small shaped like a scone or tea bisket. I was prity sure that the second pic was snail eggs but the one that would come up on a net surch were of a glutinous mass with eggs in it. I also have some of these glutinous masses in the tank I am keeping an eye on them. I have boughten 3 different types of snails but have seen about 7 different types now they are almost all grasers there is some tonga snails I believe they only come out when dark or inot shadows. I am not much of an aqua skaper but I do have alot of caves and nooks for fish to swim in and through.

Bill

I don't think its a mushroom as it like light but not alot of wter flow it was on a rock with some green star polups in a location that the star polups liked as that is why I got that rock and frag. It looked like it had a bunch of small feet on its bottom but now there is none of them there looks like there is only a single foot now. The lfs guy that sold me the rock gave this guy a squeze before putting the rock in the bag. He shruged his sholders after words. By the way the lfs was on the coast.
As I said it kind of looks like it is scone shaped.
Bill