When the Sun, Earth, and Moon align, it's called a syzygy. This alignment doesn't directly cause anything unusual to happen in the ocean.

However, this alignment is crucial for two significant ocean phenomena:

* Spring Tides: When the Sun, Earth, and Moon are aligned (either in a straight line or at a 180-degree angle), their combined gravitational pull on the Earth's oceans is strongest. This results in extra-high high tides (spring high tides) and extra-low low tides (spring low tides).

* Lunar and Solar Eclipses: When the Sun, Earth, and Moon align perfectly, either the Moon passes into the Earth's shadow (lunar eclipse) or the Earth passes into the Moon's shadow (solar eclipse).

It's important to note that while the alignment is a necessary condition for these events, it's not the only factor.

Let me know if you'd like more information about spring tides, eclipses, or any other ocean-related topics!