I googled the sundial snails and it does not look the same. Although it looks flat in the pic, the shell is not flat on one side, its like one side of a peanut shell with the snail coming out of the end. The few times I've seen it, its been no where close to my zoas.
Any other ideas? Also, any ideas on the second pic - not a great photo but its close to the back of the tank. I have quite a few of these round things.
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