Help, what am i looking at?

[Brodie]

I have recently started my first reef tank and have put some live rock in the tank. I have observed a bunch of things on the rock and was wondering what they are. Can anyone help?

 

[Brodie]

 

[Palyzoa]

I see what looks like some micro brittle starfish(good) and some green bubble algae (bad). Also some paly/zoanthid corals.

 

[Patricia Hefner]

1. Asterina Starfish and possibly a snail (Google a Stomatella Snail) See if it looks familiar they come in different colors.
2. Tiny Brittle starfish or Emerald crab and Asterina Starfish
3. Palythoas, Palys, Button Polyps

 

[RocketBunny]

Asterina star fish (the little white ones), Possibly a sea urchin or sponge (first pic first red circle), and aiptasia anemones or palythoas. dang thats one rock full of critters!

i would say, get rid of the aiptasia and palythoa zoanthids, as well as the asterina starfish. Leave the sea urchin.