31. They are agile in flight and gather in large flocks along rivers and coastal sand banks . 32. Originally the isthmus was a mere sand bank , and crossing was only possible at low tide. 33. Motu One is a low island, comprising two small sand banks awash on a coral reef. 34. It is often found in meadows that dominate a sand bank or other patch of sea floor. 35. Exposed sand banks are used for nesting. 36. They inhabit foremost flowing rivers with high sand banks that they use for basking and building nests. 37. The lake is comparatively shallow and filled with sand banks , making its navigable channels tortuous and difficult. 38. The " Osprey " was driven ashore on the shallow sand bank just north of the headland. 39. The mud and sand banks of the Solway Firth are less than one mile away to the south. 40. Sand banks are observed along the Kanger River especially at points where the Kanger River takes a curve.
