Can you tell what these are?

[cgdevore]

Just noticed these in my overflow and there are a few in the sump, anyone know what these are?

Thanks in advance!!

 

[saltyfilmfolks]

Pineapple sponges

 

[jmanley7]

Pineapple sponges. They're filter feeders. They will just help filter your water and cause no harm.

 

[cgdevore]

Oh, awesome! Found some little tube worms in there also
Thanks!

 

[Diesel]

Oh, awesome! Found some little tube worms in there also
Thanks!