Help what kind of worm is this?

[Dccustoms6]

I just saw this worm in my tank (about 3 weeks old tank is) It only comes out once in a while when night time lights are on. When i turn lights on or there is a flash it hide back inh the live rock. It comes out and has some sort of claw/fingers on it. grabbing what looks like algae off rock.

 

[Dccustoms6]

it was tough to get a picture of. this is the best i could do!

 

[RoyMurph]

Looks like a sea cucumber cleaning the sandbed.

 

[Dccustoms6]

its more like a worm, thats white epoxy putty looks like sand lol. Its arm comes out certain crevices in the live rock. I dont know what it is

 

[reeferpj]

really hard to tell with that pic

 

[yukyuklee]

does it have legs?

 

[reeferpj]

it almost looks like this but its not on a fish http://www.melevsreef.com/id/cirolanid_isopod.html

 

[Dccustoms6]

Doesnt have legs. It seems to live in the rock, or under them in a crevice. coming out when the moonlights come on, but goes in immediatly upon being disturbed by any means

 

[Turbosnail]

Peanut worm?

 

[Spaceman]

Medusa Worm? Where did u get the live rock???

 

[Dccustoms6]

IDK what it is, its really thin too. I got my live rock from an established tank from someone on bostonreefers.

 

[yukyuklee]

Kalk paste it lol

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[Turbosnail]

Does it look like this?

 

[RadReefer]

Looks like some kind of large flatworm to me...

 

[gweston]

Could be a peanut worm. I have one in a shady corner. Mine is tiny. It sort of telescopes outward and has like a bristly/teethy mouth and rummages through the sand. Its back end is attached inside a hole so it can quickly retract. Usually motion, or light. It retracts EXTREMELY quickly when startled.