Help identify something.

[James butchart]

Hi I have noticed a black thing on my blastmosa coral today and haven't a clue what it is. Help would be appreciated.

Since I have started writing this post it's moving a little so I'm thinking it's some sort of slug.

Cheers

 

[DSC reef]

Possibly a scutus.
#mods might move this to the correct section

 

[Crabs McJones]

Possibly a scutus.
#mods might move this to the correct section

+1

 

[James butchart]

I'm only reefing about 8 months I just can't get over how nature finds away in these tanks and where the hell new stuff just pops out from no where. Like it's fairly big I taught i would have noticed it before now. Is it good or bad and what does it do. Is it worth keeping it in my 90l tank.

 

[Dtfnemo]

Kind of looks like that, If it's the same thing I was told they do no harm, this little guy used to be tiny and in a couple months is gotten to that size, first time I see it on a coral

 

[KJ]

+2