seamless pattern featuring intricate blue seashells and starfish on a pristine white background for a nautical theme

seashells starfish blue nautical theme beach decor seamless pattern coastal design white background marine life shell details ocean inspiration underwater patterns intricate shells decorative art themes summer vibes collection tropical nature elements aquatic seaside motif style tranquil imagery interior home textiles wallpaper shoreline living relaxing ambiance whimsical tones motifs sandy ai generated