Does anybody know what this thing is, it stings corals

[JoJo and Paul]

 

[CanuckReefer]

Wow....no clue but following this one. I bet it does sting, yikes!

 

[Jekyl]

@vetteguy53081 usually can nail these things.

 

[Goaway]

Its a ball sponge. I don't know why they throw out those spikes but they do.

 

[Lost in the Sauce]

That is a pineapple sponge. Harmless filter feeders. Those "spikes" are soft and don't sing. It throws them out to connect to different areas. I've got some attached to rock 3" away

 

[CanuckReefer]

Its a ball sponge. I don't know why they throw out those spikes but they do.

That is a pineapple sponge. Harmless filter feeders. Those "spikes" are soft and don't sing. It throws them out to connect to different areas. I've got some attached to rock 3" away

Are these pineapple or balls fairly recent to the hobby? Or just disappear over time? Cause I know they are a good filter feeder but I don't think I've ever had one over 25 years, white sponge from beginning and still hanging on a bit....ah maybe I did way back and I was drunk in my 20's lol...

 

[Lost in the Sauce]

Are these pineapple or balls fairly recent to the hobby? Or just disappear over time? Cause I know they are a good filter feeder but I don't think I've ever had one over 25 years, white sponge from beginning and still hanging on a bit....ah maybe I did way back and I was drunk in my 20's lol...

I am recent to the hobby and there were a dozen in my tank when I bought it. I only pull off the ones that I don't want to look at.

 

[Glenner’sreef]

These don’t look like any pineapple sponges I’ve ever seen? Maybe it’s a cauliflower sponge impersonating an anemone? Hey we’re here to learn.

 

[CanuckReefer]

These don’t look like any pineapple sponges I’ve ever seen? Maybe it’s a cauliflower sponge impersonating an anemone? Hey we’re here to learn.

Does look mighty odd to my eyes too...but, hey maybe, what do I know lol.

 

[Goaway]

Sponge are weird, I know they can use those tentacles to grab onto rocks to secure themselves. They throw them out in medium to higher currents.

 

[JoJo and Paul]

I was not thinking it was a pineapple sponge either have quite a few of those bouncing around on the live rock in the filter this thing looks completely different.That thing that it’s sticking out has had my Zoe’s Nearby all closed up. Took it out of the tank and put it in a little specimen cup the The round part is actually translucent in person with a black dot in the center core, bottom side of it has five little pink type legs, if you swirl the specimen cup around and it lands on the side or upside down and immediately tilt itself back up right

 

[JoJo and Paul]

Here is a picture of it in the specimen cup

 

[vetteguy53081]

It is Scypha sp. sponge which is a type of inflated pineapple sponge . Not long lived and thrives off of silicates and favors low light areas