what is this?


Premium Member
I picked up this LR a few months ago and noticed something really tiny growing and just left it. Now that it's gotten a little bigger for a picture, I wanted to see if anyone knew what it was. Any ideas?


  • polyp.jpg
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Premium Member
yeah it really does. and it's growing fast. I just want to know what it is. LOL!
I looks like a mushroom coral. But I've never seen one like this.


New member
The shape and color does look a bit like the mushroom Discosoma neglecta. But, since it is covered with clear tentacles, some of which look to have batteries of nematocysts on them, it's probably a fungiid. Occasionally people get lucky and get very very small ones like that as hitchhikers on their rock/coral. Good stuff :thumbsup: