what is this thing, need identification

[waynefort]

I had this thing in my tank just now and it's bout less than inch but still visible through my camera, it doesn't look like critter i have found such as feather duster worm and aiptasia, it is white in color and more plump than aiptasia and the entire structure seem soft , unlike a feather duster, and it come with branch, about four in total, it look more like soft coral to me, anyone know this thing ? a last time a when i brought my torch coral, which placed beside the pulsating xenia in the LFS aquarium tank