אַתָּ֤ה פוֹרַ֣רְתָּ בְעָזְּךָ֣ יָ֑ם שִׁבַּ֖רְתָּ רָאשֵׁ֥י תַ֝נִּינִ֗ים עַל־הַמָּֽיִם׃
你曾用你的能力將海分開，在水上打碎了海怪的頭。
Rashi
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.”