Why some waters are affected by the moon and sun while other waters are not?

The gravitational pull of the moon and sun affects all bodies of water, but the extent of that influence varies. Tides are most pronounced in large, open bodies of water, such as oceans, where the gravitational forces can create significant water movement. In contrast, smaller or more enclosed bodies of water, like lakes or ponds, experience minimal tidal effects due to their limited size and reduced water volume. Local geography, such as coastal features and water depth, further influences how tides manifest in different areas.