ID on this?

[VerbsReef]

View attachment 20260125_162159_FA780B4D-B351-452E-9D8E-AFDE8CE25D28.mov
No idea what this is. Flatworms? (let me know if picture / video doesn't show up)

 

[rayadog]

Aceol flatworm. But species couldn’t say. Generally these “ghost” looking ones are harmless and usually get eaten or die off.

It is not one of the notably pesky red planaria flatworms.