We saw something just like this in South Carolina last week! They were beautiful sand sculptures. However we, like you arrived a little late to enjoy them in their entirety. So instead we decided to walk around and check out the Isle of Palms Real Estate. Some of those houses deserved to be looked at as much as sand art on the beach.
It's too bad you missed seeing them in their perfect form. I really like the idea of art done for the creativity of it not for the product in the end since the tide takes it away to be gone forever.