My garmin 945 screen looks like the seal inside has lifted.

Yeah, I'm sure everyone knows what you mean here... plz at least post a screenshot (or better description) if you want some actual useful feedback

Hi i did post a picture 

Contact Garmin Support. 

Did you swim in saltwater? Had this with a polar watch. Didn't rinse it with freshwater after the swim and small amounts of saltwater stayed in the gap between display and bezel. The cristalized salt seamed to cause it and "lifted" the display from the glue.

I have exactly the same issue - did you manage to solve yours ?

Crap, my 945 same issue and I figured about a week later my battery now drains also so quick. Won’t even last 3 days!  Fyi - I’ve had my 945 for almost 3 years now; I assume it’s because of that?   

Shocked to discover that mine is doing this as well.  Started with a little section on the bottom left and now covers the entire left "hemisphere" of the screen.  I don't swim, in either salt or pools, so mine is something else.  I'm contacting support but I am pretty sure I am out of warranty.

Sent in pictures and received a new device at no cost, although I also had to mail my defective screen device to them. 

UPDATE - Garmin Customer Support was great to work with, getting a replacement unit.