In the 2nd one, that is the same island just further along the dcoast it juts out.
In the first that is another island called kalymnos (spelling? ) ive stayed there a few times before, a 45 min boat trip from the mainland.
I think the problem with the 2nd picture is i may have oversharpened the rocks PP. I wasn`t sure if it was too much or not.
Also, like you say the sky may be a tad too bright, i topped it up a notch to try and bring detail out in the dark rocks.