Nice framing on the second photo. Now is something needed between the signs like a large vessel, mermaid, etc. IMO for an ocean scene to be the point of interest a calm sea and blue sky is difficult to pull off. In a photo you rarely get the feeling of the vastness of the scene, its that 3d to 2d thing. What is needed is an angry sea or a unique cloud formation, sunrise or sunset, etc.
Still has no point of interest
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Thank you. I'll work on composition on my next trip to the beach.