Draw a sketch map of the bay indicating its landscape, aspect, approximate positions of the high tide mark and low tide mark and position of the transect line.

绘画一张研究范围的简图，图中应包括地形、样条的位置和方向、高潮线和低潮线位置等有关因素。

youdao

As dunes build up absent a storm to knock them down they shift closer to the high-tide line, and nesting space shrinks.

WSJ: Wrecked Beaches Could Aid Plovers