Is this an overly large spionid?

[Stretch]

Just this evening I noticed this "mass" under one of my chunks of LR. This rock has NOT been moved recently. The way the clump at the bottom is formed, it looks like the smaller tubes attached to my LR in other places, made from pieces of aragonite. I've just never seen one this large. Where the red arrow points, it does look to be hollow or have an opening...

 

[JGT]

Just this evening I noticed this "mass" under one of my chunks of LR. This rock has NOT been moved recently. The way the clump at the bottom is formed, it looks like the smaller tubes attached to my LR in other places, made from pieces of aragonite. I've just never seen one this large. Where the red arrow points, it does look to be hollow or have an opening...

Appears to be a rather large spinoid.

 

[SHNICI]

Following, never saw something like.

 

[SHNICI]

Appears to be a rather large spinoid.

should be realllly HUGE one

 

[TriggerFinger]

It might be a spaghetti worm. Either way, very cool!

 

[SHNICI]

It might be a spaghetti worm. Either way, very cool!

I was thinking about..., but never saw that many strings to split that way to pull something huge like this

 

[Stretch]

I was thinking about..., but never saw that many strings to split that way to pull something huge like this

I was thinking the same. The strings hang like a curtain from the above rock and I've not seen them move "independently". I'm clueless....lol

 

[SHNICI]

I was thinking the same. The strings hang like a curtain from the above rock and I've not seen them move "independently". I'm clueless....lol

is it way with some small mirror (like the dentist mirrors) to put it under it (it's 45 deg bended) and to try take photo Please ? Can you try to manage this, because it's really odd and I'm interested in to have a clue what it is exactly.