Wetlands on the seashore. A sandbar, or shoal is a landform which is in or partly in a body of water. A shoal is a sandbank or reef creating shallow water. Sand bar between blue sea and freshwater or salt lake. Blue, green and turquoise lake water. Sand dune aerial, barrier, bay, coast, dune, gulf, inlet, inner sea, lagoon, ocean, reef, sand, sea, seaside, shallow. Shoreline lakes are generally lakes created by blockage of estuaries or by the uneven accretion of beach ridges by longshore. Aerial footage 4K UHD 3840×2160.