However, putting items from the shores is risky. They could have pollutants, diseases or other contaminates.
Either way, I would QT it. First cycle it in a tub, and see what happens... Change 100% of the water, feed it a bit and let it sit for a week, then add a couple CUC members...
i wouldnt add it i tryed adding coral from fl my aunt had it for years and it became fossilized coral that leached to much calcium made water to hard but if you decide to i would bleach it and then rinse it realy good till bleach smell goes away