White worm thing

[SarahJ]

So after finding aptasia yesterday I was looking at my tank through a magnified camera image and discovered two things, a little white thing zooming over the rock and this worm thing.

The white thing I haven’t seen since and have searched and still unsure what the worm is.

[Jaren45]

Looks like 1 leg of a brittle star, tiny starfish. They're almost never out in plain sight but you'll see them at night