The word(s) "seas" appears 23 time(s) in 22 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) There is a disease in their hearts, so Allah added to their disease and they shall have a painful chastisement because they lied.

(2) But you will see those in whose hearts is a disease hastening towards them, saying: We fear lest a calamity should befall us; but it may be that Allah will bring the victory or a punishment from Himself, so that they shall be regretting on account of what they hid in their souls.

(3) When the hypocrites and those in whose hearts was disease said: Their religion has deceived them; and whoever trusts in Allah, then surely Allah is Mighty, Wise.

(4) And as for those in whose hearts is a disease, it adds uncleanness to their uncleanness and they die while they are unbelievers.

(5) They said: By Allah! you will not cease to remember Yusuf until you are a prey to constant disease or (until) you are of those who perish.

(6) Yielding its fruit in every season by the permission of its Lord? And Allah sets forth parables for men that they may be mindful.

(7) So that He may make what the Shaitan casts a trial for those in whose hearts is disease and those whose hearts are hard; and most surely the unjust are in a great opposition,

(8) Is there in their hearts a disease, or are they in doubt, or do they fear that Allah and His Apostle will act wrongfully towards them? Nay! they themselves are the unjust.

(9) And He it is Who has made two seas to flow freely, the one sweet that subdues thirst by its sweetness, and the other salt that burns by its saltness; and between the two He has made a barrier and inviolable obstruction.

(10) Or, Who made the earth a restingplace, and made in it rivers, and raised on it mountains and placed between the two seas a barrier. Is there a god with Allah? Nay! most of them do not know!