What is this pest worm

[Nammy]

The worm is about 5mm and can stretch to 10-20mm. The base is attached to anything and stays in one place. It's very thin. Was thinking digi hydroid but theres no barb...the body seams smooth.
In pic (zoomed) there are 3 of them I manage to remove and all are about 5mm. There is no hard shell, and the worm like that extends is a single long thin work.
Thats the best pic I can get.

 

[Ron Reefman]

BUMP!

I've never seen anything like it.

 

[Mike N]

Looks a bit like retracted digitate hydroids. nvm cant read.
Have a pic of them extended?

 

[shred5]

Looks like a small cucumber..

 

[Ron Reefman]

Looks like a small cucumber..

Could be. I've collected a couple of very small cucumbers that look a lot like these.

 

[Nammy]

The ripples you see in first post is from it being retracted, once fully extended, its 3+ times the length and thin as a strand of hair. There are no had "shell" The base is attached to frag plug and looks like a bulb shape.
In pic, it's on a frag plug and you see chaeto in background. (There are 2 on the plug)

 

[ahiggins]

Well this is a lovely thing to see as soon as you wake up lol
Have you considered.....aliens.

 

[TriggerFinger]

The ripples you see in first post is from it being retracted, once fully extended, its 3+ times the length and thin as a strand of hair. There are no had "shell" The base is attached to frag plug and looks like a bulb shape.
In pic, it's on a frag plug and you see chaeto in background. (There are 2 on the plug)

This pic looks like a hydroid arm/branch/tentacle?
Does it look like this?

 

[Nammy]

This pic looks like a hydroid arm/branch/tentacle?
Does it look like this?

Ya, was leaning towards digitate hydroids. Nice pic