My first hammer

[fishspectre]

I just put this in my tank, it came from corals Anonymous overnight shipping. What is it doing?

 

[GSPClown94]

That's a barnacle

 

[BryanM]

Barnacle indeed. Best to leave it IMO.

Were the sellers pics clear that this was an included hitchhiker?

 

[fishspectre]

Barnacle indeed. Best to leave it IMO.

Were the sellers pics clear that this was an included hitchhiker?

No it was not clear this was part of the deal. I am assuming it is not harmful to the coral.

 

[fishspectre]

Thanks for informing me and confirming what's going on. I guess I will leave it for now and see if it becomes an issue.