We’ve spent the past two days in Topsail Island and it’s been very relaxing. No seaweed on the beach, plenty of shells, and lots of waves. Swim, sunbathe, repeat. 
Big D has loved riding the waves, spending the entire day in the water breaking only for lunch. Miss M has enjoyed sleeping late.
At night after dinner we’ve walked on the beach with flashlights to watch the crabs scurry about.