Here's a breakdown of the key differences between the original image and the synthetic version:

*   **Background:** The original has a blurred background suggesting distance, whereas the synthetic image shows clearer ocean waves and a more defined horizon line.
*   **Surfer Appearance**: The surfer in the synthetic image appears to have different body proportions and facial features compared to the original. Additionally, he has no visible leg strap.
*   **Surfboard Details**: The logo/design on the surfboard is different between the two images.
*   **Overall Tone**: The synthetic image seems brighter and more saturated than the original.