Don't worry, Nat. They just sort of hop out of the water, get a little sun, then hop back in. Perfectly natural, and this little seal hopped back into the water shortly after he was good enough to pose for this shot.
You don't want to try to help them- they can bite a fish in half, and- apart from seals you encounter at Sea World- they really don't like humans that much. It's best to let nature take whatever course it chooses.