What is the effect on water when the moon the sun and the earth are in line?

When the Moon, Sun, and Earth are aligned, a phenomenon known as "spring tides" occurs. During this alignment, the gravitational forces of the Moon and Sun combine to exert a stronger pull on Earth's oceans, resulting in higher high tides and lower low tides. This alignment typically happens during the new moon and full moon phases, leading to more extreme tidal variations.