Sorry if this is the wrong section . Not sure if this is a pest or some type of Xenia or something. It doesn't pulse, doesn't look like an aptasia, but I definitely didn't buy it haha.
Looks like it would be some type of clove polyp or another Xenia relative to me. You can see where it attaches to the rock and is built identical to how Xeniidae polyps are.
Thanks all. Yep probably a clove of some type. Super odd straggler and opposite my reef from where my newer corals it on the rack in my display. For sure not a cucumber or anything, and it's attached to the rock like mentioned above.
Looks like a great spot to put some superglue and a new zoa