What breakthroughs has Jerry acheived by the story's end? Consider: the tunnel, his feelings about himself, & his dependence on his mother.
By the end of the story Jerry has gone through a journey from childhood to manhood, symbolised most stridently in his journey through the tunnel.
At the beginning of the story we are introduced to a character who is on the cusp of adolescense, and very clearly feels responsible for his mother due to their enforced intimacy. Yet despite his feelings of responsibility towards his mother, he nonetheless feels drawn to the "wild beach", which is away from the "safe beach" and his mother's attentive care. The wild beach here can be said to symbolise independence and life away from the protection of a parent...
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