רָ֘א֤וּךָ מַּ֨יִם ׀ אֱֽלֹהִ֗ים רָא֣וּךָ מַּ֣יִם יָחִ֑ילוּ אַ֝֗ף יִרְגְּז֥וּ תְהֹמֽוֹת׃
The waters saw Thee, O God; The waters saw Thee, they were in pain; The depths also trembled.
Rashi on Psalms
The waters perceived You [The] mighty [waters perceived You] when You were revealed by the sea.