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. Aerial footage 4K UHD 3840×2160.