Identification please

[Paramedic9004]

I am new to the saltwater scene and new this forum. My new tank is now 5 weeks old and I just added my first piece of coral (button polyp). In order to get the look that I wanted I move some of my lives rock around and to my surprise I noticed this on the back of one of the rocks. Wondering if I got a bonus coral or is this something bad?

[Fish_wiz2]

The pic is not clear enough for me to be 100% but my three guesses are 1) closed polyp (could be a zoa or paly) 2) Hard cone snail (i think thats the name?) 3) sea slug. My money is on a closed polyp though.

[Misled]

Looks like a button polyp that's been out of light for a while.

[shifty51008]

peanut worm or Vermetid snail is my guess

[devimik]

Are they hard or soft?

[cloak]

They look like some sort of polyp to me as well.

http://www.advancedaquarist.com/2003/2/inverts

[Paramedic9004]

They are tough to the tough, they are definitely coral for sure. I will try and take a pic of a different angle when my lights kick on. I appreciate the info thus far.

[cloak]

While they don't appear to be bright green, Neomeris could be another possibility as well.

[smtank]

Look at images for snake polyps.

[Paramedic9004]

That is the most resemblance I've seen thus far. Thanks for the help.