Good use of metering technique to properly expose the shadow in the first shot. I'd be nice to have another shot with tighter framing which will also lessen the area of burnt out sky but that is a personal preference.
For the second picture, nice details in the seawater here but there don't seem to be a subject of interest in here.
Lovely composition for the last shot but it's pretty obvious that the reflection of the water on the left of the image doesn't help it much.