What is this?

[kanders87]

I just found this creature on my live rock. It will retract into its hole in my rock when touched (with tweezers). I looked at Lionfish's Hitchhiker Guide but can't ID it myself. So I ask you, what is it?

 

[saltyfilmfolks]

Pulls back with little provocation?

An aptasia or mojano you really have to poke.

I'd say sessile cucumber.

 

[kanders87]

No, I barely touched it and it retracted, then came back out after maybe 30 seconds to a minute.

 

[Palyzoa]

Looks like a majano or aptasia

 

[saltyfilmfolks]

A less blue pic would be great to help the Id

Not exact matches but....

http://animals.nationalgeographic.com/animals/invertebrates/sea-cucumber/
http://sanctuarymonitoring.org/species/cucumaria/miniata/orange-sea-cucumber
http://www.diverosa.com/categories/Seacucumbers.htm

 

[kanders87]

It's kind of purple in color with a whitish center, and the tenticle/arms are very thin...if that helps at all.

 

[saltyfilmfolks]

There are several aptasia and also mojano anemones. Tough one.

 

[kanders87]

Here's a pic in more white light. Sorry for the crappy cellphone pics.

 

[kanders87]

It hazn't moved from this spot at all since I found it a few hours ago.

 

[saltyfilmfolks]

No need to apologize. That's better.
I don't think is a mojano I could be wrong. The long and short tentacles are weird. It could just be a carribean anemone.
Most of the cucumbers I belive have fuzzy tentacles.

 

[kanders87]

Well, whatever it is, I glued it into it's hole.