Coral Hitchhiker vs Anemone

[Idoc]

Received a shipment of snails from ReefCleaners the other day. I ordered a lot of the dwarf ceriths which, of course, are just a big pile in a bag, lol. I dumped them into my quarantine tank and 2 of these small polyps are now attached into my sand to the aquarium floor. I discarded one yesterday... then another one found today. They aren't acting like an aptasia anenome... there's substance to their bodies after they retract... but they do suction to the floor of the aquarium! The one yesterday was grabbing my finger with its tentacles! Any ideas what it is?

Ps... also got a small hermit crab in that bunch as well!

 

[DSC reef]

Any skeleton to them, possibly a walking dendro?

 

[Idoc]

Any skeleton to them, possibly a walking dendro?

I don't recall the one yesterday having a solid skeleton when i was holding it... but i didn't really squeeze it, though. It felt solid but mooshy.

 

[Idoc]

Any skeleton to them, possibly a walking dendro?

Just squeezed this one...no skeleton.

 

[flsalty]

Maybe a Bunodactis or Bunodosoma?

 

[GlassMunky]

The photo attached is an aiptasia pest anemone