siphon tube

[fishtender]

OK, I give up....what is it? It lives on the roof of a cave in my live rock about an inch above the SB. I can't clearly see where it houses itself but it is definatly in the rock. It never moves from where it is. It never appears during the day even though it is dark in the cave. At night, when the lights have been off for an hour or so, I take my trusty flashlight and see what looks like a siphon tube, about 1/8th of an inch in diameter sticking into the SB. As soon as the light hits it, it retracts back and disappears into the rock again. I cannot be certain how long it is but I would guess 2". It is a light grey color, and seems to be very photo sensitive.

Any ideas?

Howard

 

[ReefLady]

Peanut worm possibly?

Moe info:

>>Introduction to Sipuncula The Peanut Worms<<

>>Reefkeeper's Guide to Invertebrate Zoology: Part 6: Phylum Sipuncula and Phylum Annelida

>>SIPUNCULA - THE PEANUT WORMS<<

 

[fishtender]

It looks more like the shape of an elephants trunk. Tubular, elastic. It sticks itself straight into the sand and feeds on something down there.?.?.