Now go back and look again remembering that these works are made of SAND.
I posted the winning sculpture by John Gowdy, entitled Young Love Never Grows Old", a few days back.

2nd Place - Rich Varano | USA
Title: “Cascadia – A Sand Fantasea”

3rd place - Walter MacDonald | USA
Title: “Poor Planning”

This is again the 3rd place entry. Same shot just edited to enhance, and draw attention to the work and not the surroundings.
Enlarge for better view.

4th place - Matt Diebert | USA
Title: “Glory Lost and Restored”

5th place - Sudarsan Pattnaik | India
Title: “Save the Sea”

6th place - Helena Bangert | Netherlands
Title: “Going for a Ride”
Great details you caught in these. Well done.