Can someone ID these things?

[OneReef]

I did a Coral Rx dip of an Acro that had some white spots on it. This is all I could come up with out of the dip water. Could not find any AEFW. I know the asterina. Could they hurt SPS at all, my tank has lots of them. What are the others? One is a tiny snail of which I saw many in the bucket.

 

[texgv]

Garf has a webpage about those starfish, they say it's acropora eating, check it out http://www.garf.org/STAR/starfish.shtml .

 

[OneReef]

Garf has a webpage about those starfish, they say it's acropora eating, check it out http://www.garf.org/STAR/starfish.shtml .

Thanks, that could be the issue. Fortunately, I added three Harlequins in within the last couple of weeks. they are starting to put a dent in the population.

 

[OneReef]

Looks like the snail may be a Collunista(sp?). Maybe a harmless grazer.