I think so too. Kind of cool to find stuff like this and not something that needs to be gotten rid of. It's on a rock that I need to break as it's too big. Hope I can split the rock and not damage the mushroom.
Well I have watermelon mushrooms I didnt want in my tank ...I had moved an old rock that was used as a base rock...I thought the mushrooms are dead and gone being in the dark and under loads of rocks for months.
I have that rock in a spot thats like a cave ...and I see big new watermelon shrooms showing! ugh...
I also have a chili coral but of course in the dark hidden in some spot cause I have not changed my rocks set up yet... I am going to buy 30 more lbs I think...I need more space to glue down frags.