What is this graboid looking thing?

[TBLightning]

 

[blaxsun]

Now I need to watch Tremors again.

 

[uhgster1]

I can’t see your videos ‍

 

[AFHokie]

Some kind of eunicid worm? Just a guess.

 

[TBLightning]

I moved the coral and got a bit better footage of the graboid. Kinda shaky and out of focus but trying to hold the light just bright enough to not scare it back into its hole while getting enough light to see it was difficult.

 

[Soren]

It's hard to know for sure, but it appears to be a spionid worm.
The two larger tentacles sticking out above the main worm body in the first videos are typical in spionid worms.
I think they are generally considered harmless, but I have no known experience and limited research into this type of worm.

 

[bnord]

 

[bnord]

 

[Privateye]

Looks like the proboscis of a peanut worm to me. If so it's harmless. Actually a good hitchhiker. I had one for at least 5 years. For all I know I still do, but I haven't moved the tank in a while and that's usually when I find it.

 

[TBLightning]

Looks like the proboscis of a peanut worm to me. If so it's harmless. Actually a good hitchhiker. I had one for at least 5 years. For all I know I still do, but I haven't moved the tank in a while and that's usually when I find it.

So the probiscus above the actual worm is part of the black/white tube body that extends down and opens?

 

[Privateye]

Maybe I'm not seeing what you're seeing, but it's difficult to explain. The proboscis extends from the body of the peanut worm and you almost never see the body. It's hidden in rock or sand. The proboscis kind of unfurls from the inside-out. Maybe some pics will show it better:

 

[TBLightning]

That bottom picture looks like it. I thought you were refering to the two flagelletes (not sure if thats the right term) sticking out above where the tube body extends out.

 

[Privateye]

That bottom picture looks like it. I thought you were refering to the two flagelletes (not sure if thats the right term) sticking out above where the tube body extends out.

If you see the proboscis unfurl from the inside out then that's a pretty good indicator. When it's not visible, if you put some food in that area, or just in the tank and watch that area, you may see it come out. The main body is mostly stationary but they push the proboscis around looking for food within range. They're part of the cleanup crew.

 

[EeyoreIsMySpiritAnimal]

Now I need to watch Tremors again.

Isn't it crazy how Tremors has turned out to be a reef film?? Lol!

 

[damsels are not mean]

Peanut worm. Harmless. It will reach around its base for food particles. More active at feeding times usually. I got a bunch.

 

[Karen00]

Isn't it crazy how Tremors has turned out to be a reef film?? Lol!

I think the creator of that film took inspiration from the monsters of the deep ocean! Haha.