MaeganWink December 9, 2019 December 9, 2019 My students noticed these worm-like organisms on one of their mushroom corals today. Any idea what they might be and if they're harmful?
lynn.reef.nerd December 9, 2019 December 9, 2019 That's the mesenterial filament. I normally sees this in mine when it is stressed (handling, moving, etc.).
ReefdUp December 9, 2019 December 9, 2019 Agree - although sometimes they also come out as part of the feeding response.
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