אַתָּ֤ה פוֹרַ֣רְתָּ בְעָזְּךָ֣ יָ֑ם שִׁבַּ֖רְתָּ רָאשֵׁ֥י תַ֝נִּינִ֗ים עַל־הַמָּֽיִם׃
Tu dividiste o mar pela tua força; esmigalhaste a cabeça dos monstros marinhos sobre as águas.
Rashi on Psalms
the beads of the sea monsters They are the Egyptians, who are called sea monsters, as it is said (Ezek. 29:3): “the great sea monster, etc.”