The sea, yam, is used in Scripture to denote--

+ "The gathering of the waters," "the Ocean." (Genesis 1:2,10; 30:13) etc.

+ Some portion of this, as the Mediterranean Sea, called the "hinder," the "western" and the "utmost" sea, (11:24; 34:2; Joel 2:20) "sea of the Philistines," (Exodus 23:31) "the great sea," (Numbers 36:6,7; Joshua 15:47) "the sea." Genesis49:13; Psal 80:11 Also frequently of the Red Sea. (Exodus 15:4) [Red Sea SEA]

+ Inland lakes termed seas, as the Salt or Dead Sea. [See the special article]

+ Any great collection of waters, as the river Nile (Isaiah 19:5) and the Euphrates. (Jeremiah 51:36)