10 Miracles at the Yam Suf

Pirkei Avot 5:3 (some say 5:4):

עשרה ניסים נעשו לאבותינו במצריים, ועשרה על הים; עשר מכות הביא הקדוש ברוך הוא על המצריים במצריים, ועשרה על הים.

10 miracles were performed for our forefathers in Egypt, and 10 at the sea; Hashem brought 10 plagues upon the Egyptians in Egypt, and 10 at the sea.

Ribbi Ovadia MiBartenura explains that the 10 miracles in Egypt were the fact that the Israelites were saved from the 10 plagues.
Regarding the 10 miracles at the sea, he enumerates the 10 miracles like this:

1. The water split
2. The sea became like a tent and the Israelites entered therein
3. The ground of the sea was totally dry - there was no mud
4. The same ground became muddy for the Egyptians
5. The water that froze didn't freeze as 1 chunk, but rather as patterned bricks
6. The frozen water became as hard as a rock
7. The sea split into 12 paths - 1 for each tribe
8. The walls of frozen water were transparent so the tribes could see each other
9. Sweet, drinkable water came out of these walls
10. After they each drank enough, the leftover water would freeze up into piles

The 10 plagues at the sea correspond to the 10 "downfalls" mentioned in the Shirat Hayam:

1. רָמָה בַיָּם hath He thrown into the sea
2. יָרָה בַיָּם hath He cast into the sea
3. טֻבְּעוּ בְיַם-סוּף are sunk in the Red Sea
4. תְּהֹמֹת יְכַסְיֻמוּ The deeps cover them
5. יָרְדוּ בִמְצוֹלֹת they went down into the depths
6. תִּרְעַץ אוֹיֵב dasheth in pieces the enemy
7. תַּהֲרֹס קָמֶיךָ Thou overthrowest them that rise up against Thee
8. יֹאכְלֵמוֹ, כַּקַּשׁ it consumeth them as stubble
9. כִּסָּמוֹ יָם the sea covered them
10. צָלְלוּ, כַּעוֹפֶרֶת they sank as lead