Here's young Phillip in Byatt's THE CHILDREN'S BOOK, having his first experience of the sea:

Phillip walked almost ceremoniously along the shingle toward the bank of pebbles at the edge of the land. The first time he came—he came many times—he was eager to reach the water edge, and only took in the human clutter and the tenacious vegetables with sidelong glances.  He met no one.  It was his adventure, and felt like his place. When he came to the end, he scrambled up the bank with the pebbles rattling and rushing below him, pulling him down with them, so that he went up slowly and with effort. There was the sea... ..He was at the edge of England. ... He hadn't even considered the fact that the earth was round, that he stood on the curved surface of a ball. Here seeing the horizon, feeling the precariousness of his standpoint, he suddenly had a vision of the thing--a huge ball, flying, and covered mostly with this water in endless motion, but held to the surface as it hurtled through the atmosphere... ...the round earth, with hills and valleys of earth, under the liquid surface. It felt pleasant, and frightening, to be alive in the sun. He sat down on the pebbles, which were warm, and ate the bread and cheese and apple he had brought. ... He spent time drawing things--the leaves of the sea kale, a ghostly crab-shell, a piece of bleached driftwood, just for the pleasure of looking and learning. Now and then he looked furtively at the water, to see if it had changed--it always had.  He felt changed, but there was no one to tell.