Surah Al-Infitar 82:3
وَإِذَا ٱلْبِحَارُ فُجِّرَتْ
And when the seas are erupted
Translation: Saheeh International
Tafsir
and when the seas are burst forth released one upon the other forming one mass of water so that the sweet water mixes with the salty;
Excerpt from Tafsir al-Jalalayn, commentary on 82:3, via Quran.com. The reader has the full commentary and 9 more tafsirs.