I was under the impression that Briareum was a type of encrusting Gorgonian, from what I've read.
Well it's strange but look like "encrusting" to me. One of the branches on a frag was originally touching the side of another LR. A few weeks later it seems like that branch has starting "encrusting" the contours of that rock. Interesting.
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Tahir the "advanced" newbie.
If there is such a thing.