The sea represents Gentiles and the land the Jews.
The Jews that settled Israel did not arrive by land.They came out of the sea.
The Exodus 1947

Daniel 8
9 And out of one of them came forth a little horn, which waxed exceeding great, toward the south, and toward the east, and toward the pleasant land.
They came from the north west ,and arrived in the pleasant land via the Mediterranean.
