What’s on my rock, hiding underneath hair algae

[Foggy Pirate]

Hello, any idea what this is, I have a 3 yr old ish tank and nothing is new and I haven’t really seen something like this before. Only pest Iv had are bristle worms. I noticed when I started to clean tank and small white tubes kinda blew around with the algae? Vermid Snails? If so what can I do, bumble bee snails? Kinda a lot to make sure I glue them all and it’s hiding in the algae. There two spots in my tank with some hair algeA, it never goes crazy so I just kinda leave it

 

[blaxsun]

Looks like pineapple sponges.

 

[blecki]

I don't think those are vermetids - they don't appear to be a tube, and the spike is unusual. They appear to have a rounded end. At a glance, I'm thinking they are caulurpa, a macroalgae. Those look exactly like the tips of the 'runners' on grape caulurpa, including the little spikes. But I wouldn't rule out some kind of sponge or tunicate.

 

[Foggy Pirate]

Off the same rock this was growing in the shade, I think way to big for pineapple sponge , but it would be nice if that’s all the other stuff is.

 

[blecki]

That does look spongy. But you would know if it was a pineapple sponge. They are very well named, and also fuzzy where as your first pictures look smooth.

 

[Foggy Pirate]

That does look spongy. But you would know if it was a pineapple sponge. They are very well named, and also fuzzy where as your first pictures look smooth.

Yes, i have had a bunch of pineapple sponges in the past when I started the tank, and yes they are very distinct and look Exacly like pineapples lol. Ya idk what that stuff is. ‍

 

[Foggy Pirate]

That does look spongy. But you would know if it was a pineapple sponge. They are very well named, and also fuzzy where as your first pictures look smooth.

Yes, i have had a bunch of pineapple sponges in the past when I started the tank, and yes they are very distinct and look Exacly like pineapples lol. Ya idk what that stuff is.

 

[Foggy Pirate]

Also found

I don't think those are vermetids - they don't appear to be a tube, and the spike is unusual. They appear to have a rounded end. At a glance, I'm thinking they are caulurpa, a macroalgae. Those look exactly like the tips of the 'runners' on grape caulurpa, including the little spikes. But I wouldn't rule out some kind of sponge or tunicate.

also found this on same rock as I’m cleaning

 

[Foggy Pirate]

Also found

also found this on same rock as I’m cleaning

There like white stringy things, they don’t look fleshy enough to be aptasia, not sure what that is

 

[Foggy Pirate]

Hello, any idea what this is, I have a 3 yr old ish tank and nothing is new and I haven’t really seen something like this before. Only pest Iv had are bristle worms. I noticed when I started to clean tank and small white tubes kinda blew around with the algae? Vermid Snails? If so what can I do, bumble bee snails? Kinda a lot to make sure I glue them all and it’s hiding in the algae. There two spots in my tank with some hair algeA, it never goes crazy so I just kinda leave it

Those maybe vermid?

 

[blecki]

also found this on same rock as I’m cleaning

I see a tunicate, a pineapple sponge, and what might be hydroids in this picture.

Those maybe vermid?

The bright white one might be a vermetid. Is the tube hard? The two behind it look like tunicates.