John thinks it is a very small glowing marginella,Sorry, forgot I had been tagged here - for the worms, I'm thinking they're a Capitellid species of some variety, but I'm not sure which (you find quite a few worms that I haven't researched before, haha).
The snail has been bothering me, as I know quite a few species with relatively similar patterns on the shell, but they all either have the wrong shape for the shell or no siphon like that. Do you think you could get some pics looking straight on towards the snail from the top, both sides, and the bottom? No guarantees, but it might help with an ID.
As is, though, any unidentified snail with a long siphon like that would be suspect in my book.
"Coloring is off from most Glowing Marginellas but I think that is what it is. Lighting may have something to do with it, or it is just more leopard spotted than other specimens. There are other Marginellas with leopard spots but for various reasons I don’t think it is one of those. Queen Marginellas are the closest but 1.5 inches long and have a ridge on the side that is absent from yours. Glowing Marginellas are common and small."
It is about 4mm right now, and we discussed if it is possible that my other two marginellas bred successfully.