Is this an anemone?

[ilovemarinetanks]

This is white and its tentacles flows in the water/moves. Hopefully these pictures are okay.

 

[bradleym]

It looks like a group of aiptasia, but they usually don't prefer to be in groups in the shade. Can you get a better picture if you remove the top rock?

 

[ilovemarinetanks]

I thought it was aiptasia at first too but it's white and not brown? Thanks, I'll try to get a better picture!

 

[bradleym]

Aiptasia will turn white if they don't get enough light, so that part makes sense. But they will usually move/stretch into the light if it is nearby.

 

[bradleym]

There are also some kinds of soft coral that can look like a small group of aiptasia, so that is why I am asking for a picture in brighter lighting.

 

[steveschuerger]

Looks like possible aiptasia, although without a better picture I can’t rule out something like cup coral as well.

 

[bradleym]

Looks like possible aiptasia, although without a better picture I can’t rule out something like cup coral as well.

That's the other one I was thinking of too! I just couldn't remember the name.

 

[Pickle_soup]

Some aiptasias have white tentacles. That's what I am seeing.

 

[Aiptaisia anemone]

Poke it if it moves its an aiptasia but i highly doubt it is..

 

[bakbay]

To answer the OP’s question, yes — it’s likely an anemone, glass anemone. I wouldn’t try to feed them though. When in doubt, it’s likely an aiptasia! lol I would try to monitor closely and nuke them as soon as you ID them.