ID on growing mat? Coral?

[hmspradlin]

Does anyone have any idea what this purple/brown looking mat between the zoas and Monti is? It was on a plug I got and transferred. Grows incredibly easy... Excuse the photobombing clownfish, he's full of himself/herself

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[nathan1986]

I don't see a picture lol


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[hmspradlin]

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[Postal]

Most likely a type of encrusting sponge

 

[zachfishman]

Looks like Zerg creep IMO

j/k