Easton's Bible Dictionary (1897)/Red Sea
Red Sea The sea so called extends along the west coast of Arabia for about 1,400 miles, and separates Asia from Africa. It is connected with the Indian Ocean, of which it is an arm, by the Strait of Bab-el-Mandeb. At a point (Ras Mohammed) about 200 miles from its nothern extremity it is divided into two arms, that on the east called the AElanitic Gulf, now the Bahr el-`Akabah, about 100 miles long by 15 broad, and that on the west the Gulf of Suez, about 150 miles long by about 20 broad. This branch is now connected with the Mediterranean by the Suez Canal. Between these two arms lies the Sinaitic Peninsula.
The Hebrew name generally given to this sea is Yam Suph. This word suph means a woolly kind of sea-weed, which the sea casts up in great abundance on its shores. In these passages, Ex. 10:19; 13:18; 15:4, 22; 23:31; Num. 14:25, etc., the Hebrew name is always translated "Red Sea," which was the name given to it by the Greeks. The origin of this name (Red Sea) is uncertain. Some think it is derived from the red colour of the mountains on the western shore; others from the red coral found in the sea, or the red appearance sometimes given to the water by certain zoophytes floating in it. In the New Testament (Acts 7:36; Heb. 11:29) this name is given to the Gulf of Suez.
The great historical event connected with the Red Sea is the passage of the children of Israel, and the overthrow of the Egyptians, to which there is frequent reference in Scripture (Ex. 14, 15; Num. 33:8; Deut. 11:4; Josh. 2:10; Judg. 11:16; 2 Sam. 22:16; Neh. 9:9-11; Ps. 66:6; Isa. 10:26; Acts 7:36, etc.).