Elisabeta's "By the beach" starts out like a postcard. The sun is shining, and the speaker is so delighted by the light that she repeats the idea: it's bright, and then "so shiny." The language is simple and almost childlike, which fits the happy surprise of a perfect beach day.
Then the second stanza shifts. The sea "flows a lot," and the speaker admits, "I think it's gonna drown me." The casual, chatty tone makes the fear feel honest rather than dramatic. She isn't shouting for help; she's just saying what crosses her mind.
The mood sits somewhere between calm and uneasy. Brightness and danger share the same scene, and the poem doesn't explain why. We can read it as a real fear of the water, or, judging by the contrast, as a feeling of being overwhelmed even when everything around you looks cheerful. The short length makes that sudden turn hit harder.