I think it's in the angles, at that distance and altitude in the top image, the grass just appears to be closer to the shore. Is that what you mean?
On the image that shows more of the shoreline, put a ruler perpendicular to the plane’s wings so you can see what would be in direct line of view for the plane. Take note of that terrain.
Then do the same thing with the other photo. Take note of that terrain.
Maybe the plane rotated in the ocean. Take your ruler and try a different angle on the photo with more shoreline showing. What angle could the plane be at and still have, in front of it, the particular terrain shown in the grassy photo?
In that top picture in 327 you can see the beginning of the airstrip at 11 o’clock relative to the plane.