Creature id please

[Jyetman]

What is this some kind of sponge? Do sponges move this one does about 1/2" a day?
Adding pictures still doesn't work! Have to add links for pictures.

https://www.dropbox.com/s/glm1kxd69fq0t01/IMG_2322.jpg?dl=0
https://www.dropbox.com/s/wzt5jsh8qrfk00u/IMG_2323.jpg?dl=0
https://www.dropbox.com/s/u17n7hdh7pui4rr/IMG_2324.jpg?dl=0

 

[Anemone]

Yes, sponge.

Kevin

 

[Reef noob_]

Definitely looks sponge-y to me. Sure it has moved?

Sent from my Pixel 3 XL using Tapatalk

 

[Paden]

How many inches has it moved? First i ever heard of this.

 

[Jyetman]

How many inches has it moved? First i ever heard of this.

Hasn't moved so I must be mistaken.