What is?

[Zacc]

Have a weird black thing growing off one of my gonis , just noticed it while cleaning the tank and repositioning corals .

 

[DEL]

Looks like a tube. Is something coming out of it ?

 

[ericrodriguez]

Have a weird black thing growing off one of my gonis , just noticed it while cleaning the tank and repositioning corals .

It a type of snail I think, I have too. Corals usually just grow over it like nothing…

 

[Zacc]

Looks like a tube. Is something coming out of it ?

Kinda looks like it , like two tiny antennas . Can’t upload a video tho lol

 

[Zacc]

iCloud Photos - Apple iCloud I believe that’s the link for the video if whatever it is lol

 

[redfishbluefish]

Good chance it's a Vermetid snail. Google that and see if it looks like the one you have. They are a sessile snail that sends out sweeper tentacles that could sting close corals.

 

[ericrodriguez]

Good chance it's a Vermetid snail. Google that and see if it looks like the one you have. They are a sessile snail that sends out sweeper tentacles that could sting close corals.

I think is exactly that, but can they really sting corals?
I see sps just grow over them

 

[redfishbluefish]

I think is exactly that, but can they really sting corals?
I see sps just grow over them

Actually you are correct....they put out a mucus net to catch detritus. I mistook it for sweepers. I typically see it at night. It's one of the reasons I dose calcium carbonate (DIY Coral Snow) at night, hoping, albeit anecdotal, it clogs up their feeding and they starve.

 

[mwil79]

I think is exactly that, but can they really sting corals?
I see sps just grow over them

They don't sting corals just annoy then to the point they don't open.