What the heck is this?

[SmallFry]

Originally Posted by hillegom

Its an epitoke of some worm
They release sperm or eggs when swarming in the ocean

Thanks, never heard of those before..
I looked those up and I think that's definitely what it is/was. I was beginning to worry that it was something that was about to wipe out my fish, corals or both. Paranoia is a terrible thing...