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I believe it's an anemone reproducing through pedal laceration.
I was.Were you recently on the Cayman Aggressor? Please post a report! Sorry I can't help to id your critter!
I was.
Generally a good Caribbean liveaboard trip.
I don't plan to post a report, but if you have specific questions, I am more than happy to answer in a PM or respond if you start a new thread in the Cayman or liveaboard section.