What are the yellow things with tubes?

[Debbie W.]

Can someone tell me what these yellow tube critters are? I've not seen anything come out if them but they did appear recently.

Thanks!

 

[MrObscura]

Sponges but I also see an aptasia you'll want to take care of.

 

[Debbie W.]

Sponges but I also see an aptasia you'll want to take care of.

Thanks! We recently got a file fish to hell with the aptasia. Any idea what kind of sponge? I never knew they had a tube like that.

 

[Debbie W.]

Thanks! We recently got a file fish to deal with the aptasia. Any idea what kind of sponge? I never knew they had a tube like that.

 

[MrObscura]

I just know them as yellow sponges.

 

[Brad Miller]

Looks like yellow nipple sponges

 

[Debbie W.]

Looks like yellow nipple sponges

Thank you!