Pix & ID: Critters that come in your rocks: the good and the bad.

FWIW when my turbos reproduced it was them puffing white clouds into the tank (sperm) and then laying eggs never saw webbing like that during the whole process. I think there is something else going on because this does not seem like turbo snail spawning to me.
Tectus breed in that way.

Strombus and turbos lay eggs as far as I have watched in my aquariums
 
center of picture.....is this a Asterina?

Saw one then a few days later about 6.
 

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What is this thing? I was shining my touch in the tank and i saw couple of these things poking out the rocks looks like worms and they disappear back in the rock when the light is on

Thanks! :-)

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I have a hitchhiker on my live rock. It looks like a barnacle but has long tentacles that come out, It looks like a mop when they're extended.
 
I have white dots on the back wall of my tank and on my power heads. Can't get a shot of the back wall but I will try with the power heads but probably won't be great quality. Any ideas?
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