How to remove or edit PDF highlights in PREVIEW

It's a ridiculous piece of interface nonsense, but the way to remove the highlights is to open the sidebar, select Annotations from the pop-up menu at the bottom of the sidebar to get the list of annotations (and highlights) in the document.
Select the annotation/highlight in the sidebar (it'll have the page number next to it, and selecting it sends you to that page, too) and you'll find that the annotation itself, or in this case the highlight, is selected, and pressing Delete gets rid of it.

s.

On the sidebar to the right (where the thumbnail pages appear, if it does not, select view -> sidebar), on the bottom, next to the size scroller, you will find a button. It lets you select what you're viewing in the sidebar. Click it and select "annotations". You can edit and delete annotations there. =)

I'm having the same exact problem. If you're desperate, one option is to change the highlight color to white and then re-highlight, but I'm in the same boat with you and would love a real solution.

Sharon - Thanks for posting this solution. I had no idea how to remove extraneous highlight marks on my .PDF file until your solution was found!

~ Jeff