something on gonio?

[nick_]

found two slimy creatures on one of the gonioporas, reminds me of a flatworm or nudibranch of some sort? could’nt find anything online so hoping someone here knows what it is C:

couldn’t get a better picture sorry! accidentally poured them down the drain while trying to hold it in better light for a proper pic

they were a few millimetres big, white and bright red. a freshwater dip loosened them a bit but they were attached pretty well.

 

[Cthulukelele]

The problem with nudibranch id's is there are thousands of them! Odds are good if it's sticking to that area its munching though

 

[ISpeakForTheSeas]

Did the critters have a couple of super thin strings coming off of them?