• William

Hannah

On the caulastrea - algae. On the euphyllia - unclear, not visible (by the way, it can reproduce by growth - a normal photo is needed). Algae - cut out - remove with tweezers to avoid pressing on the coral.

Curtis9143

I tried to take better photos. In the second one, you can see that this growth is on top of the euphyllia's foot. The right head never opens up much, the worms prevent it, but it doesn't die; it seems to be feeling fine.

Debra

This is a sponge.

Colin1418

Well, it's something already, but what is it called, where can I read about it? How to deal with it (if it needs to be dealt with)?

Larry9400

I see, thank you. What should I do about the worms? They are certainly interesting, but they don't allow the euphoria to unfold.

Elijah7048

You can carefully remove them, but I would leave them, or settle Helmon there—he will destroy them first thing. The sponge with euphyllia definitely needs to be carefully trimmed.

Melanie

Where they are obstructing, remove them carefully, trying to break the tube at the very base with the Euphyllia as closed as possible, and do not damage the tissue and skeleton of the Euphyllia. There are some feather duster worms that may be sitting quite deep, that is, in the tube, in the recess of the live rock, and when you break the tube, they may hide deep inside, and when you break the tube, there is a chance that the worm's body will not be damaged; if it is not damaged itself, it can continue to live and eventually build a new tube. Remove everything that hinders the full opening of the Euphyllia and its well-being.