Unfortunately, the stairs seem to be the only way down there. There is a dirt path to the right of the parking payment kiosk (behind it), but I did not check to see if it leads down there. If does, it may still be a steep hike back up to the lot.
I didn't see one. Maybe a long walk from a different spot along the coast. I highly doubt that's possible without getting into the water
Thanks! Your answer is awaiting moderation.