whats growing on my hammer?

[Spencer Smith]

hey guys, I've had this hammer for 6th months, it was very happu but then i upgraded my display tank, now its started to grow this structure that expels a string (zooxanthellae or feeder, not sure). anybody know what this is?
The structure Im referring to orange in color located on the front under the heads.

 

[KJ]

Vermetid snail. Mucous net can irritate corals.

 

[Spencer Smith]

Thank you! ever since it appeared, hammer has never opened the same. Looks like thi snail steals their food

 

[KJ]

Thank you!

YW;) and Welcome to R2R!!!