I said I don't have to agree with how others view the mention of seas, rivers and streams. If they wish to view the seas, rivers and streams as being literal and that these seas, rivers and streams are literally bloody that's their right. I don't have to agree with that view just because others do.
The scriptures show that seas, rivers and streams can be used symbolically.
Isaiah likened the wicked people of earth, the masses alienated from God, to “the sea that is being tossed, when it is unable to calm down, the waters of which keep tossing up seaweed and mire.” (Isaiah 57:20). At Revelations 17:1,15 the “waters” on which Babylon the Great “sits” are said to mean “peoples and crowds and nations and tongues.”
Daniel described four “beasts” that came up “out of the sea” and revealed these to be symbolic of political kings or kingdoms. Daniel 7: 2, 3, 17, 23. Similarly, John spoke of a “wild beast ascending out of the sea,” that is, out of that vast portion of mankind that is estranged from God; and his mention, in symbolic language, of diadems and a throne again links the idea of a political organization with this beast out of “the sea.” Revelations 13:1, 2. He also saw in vision the time when there would be “a new heaven and a new earth” and when “the sea,” would be no more. I believe this sea is the turbulent masses of people alienated from God, (Revelations 21:1)