Fatir · 35:12

12. And the two seas are not alike: One of them is extremely sweet and easy to drink due to its sweetness, and the other is salty and bitter which is not drinkable due to its extreme saltiness. And from each of the abovementioned seas you eat fresh meat, which is fish, and you extract from them rubies and coral which you wear as adornment. And you see the ships, O onlooker, splitting the sea with its sailing, coming and going, so you can seek the grace of Allah through trade, and so that you thank Allah for His many favours He has done for you.