What is this?

[Michael07]

Hey guys im new to the site, ill post so info on what type of tank i have in a few, but i was looking at my tank last night around 12:00am, the lights had been off already for about 2hrs and i happen to see this, Its clear about 6 to 7" long, and it was coming out of the live rock, looks kind like a tentacle but at the end of it it splits into a T and has 2 black/green tips

here are some pics was hoping to see if any of u guys know what is it.....

Sorry if they are blurry, In the second photo u can see it on the glass and then it kinda goes right a bit and then goes back left and then into the rock

 

[midmichman80]

I have no experience with this, but seeing as noone else has chimed in I will make a suggestion. On another forum they chronicled a guys tank adventure with the infamous bobbit worm. Do a google search for that guy and see if the pictures match up. Hope it isn't for your sake, but that would be my only guess, cuz like I said, I have no experience other then what I have read.

Good luck.