Stranger Things On rocks!

[SixNix]

Hy people can someone plz help to identify what is?
I found two on the holes of one of my rock.
Tks in Advance

 

[sfin52]

Can you take pic with a white light on. Hard to make out details.

 

[sfin52]

 

[SixNix]

Tks m8.

Later I will do only white light on.
Atm I'm not at home.

 

[Mike N]

Looks a bit like a vermetid worm. Does it move?

 

[SixNix]

Looks a bit like a vermetid worm. Does it move?

Just spot it a few hour ago.
When I arrive I will check.

 

[reef lover]

+1 vermitid snail.