That’s not a horizon line that’s where the ocean in the foreground of the pic on top meets the haze. In the second pic it isn’t discernible at all.
Hmmmm. Where the ocean meets the "haze" is...the horizon. Or is the haze so dense that it describes a perfectly straight line across the extent of the visible ocean? And I see that same line in both pictures. It's in the second. Just harder to see.