I've been browsing the internet for a photo and you're right it is likely more a tunicate than a sponge. I have some of it growing on my rock. I'll take a pic this weekend and post it. I do believe there is also a photo in Calfos Reef Invertebrates book (somewhere in there).
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Every electronic component is shipped with smoke stored deep inside.... only a real genius can find a way to set it free.
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