The Sea, The Square Footage of Heaven and the Passover

I was reading my chapter for the day and when I read Revelation 13:1 in the Amplified, I better understood why the Spirit of God, for the past week, kept highlighting the word SEA to me. Revelation 13:1 says,

[As] I stood on the sandy beach, I saw a beast coming up out of the sea with ten horns and seven heads. On his horns he had ten royal crowns (diadems) and blasphemous titles (names) on his heads.

When I read OUT OF THE SEA, the Holy Spirit quickened in my spirit that, ‘the sea is not the same as the earth’. For some reason, I thought that they were one-in-the-same but according to scripture, clearly, they are not. Revelation 5:13 says,