Where are all the sandcastle moats on Horse Isle?

1- East of Earton, Horse Isle

2- Hoof Isle

3- Bird Isle

4- Dolphin Isle

5- Art Isle

6- Just East of Docks, Snow Isle

7- Turtle Isle

8- Cat Isle

9- Right Ear, Hare Isle

10- Flower Isle

11- Desert Isle

12- Desert Isle

13- 1st Sand Isle

14- 2nd Sand Isle

15- 3rd Sand Isle

16- Dust Isle

17- Snowball Isle

18- Ice Isle

19- Crossbones, Pirate Isle

20 - Torrid Isle

21 - Polar Isle