I have recently heard of this theory that the women who prcreated with the angels (the ones who created the nephilim) were cast into the sea and had their legs closed so they could no longer reproduce and we call them mermaids/sirens.
Also, the Leviathan is real and alive and is the reason we are no longer exploring the ocean.
My friend and I were ghost hunting in an abandoned ghost town in OR. We were there pretty late in the night and literally heard so many whispers and she swear she saw a man following us so that’s was our queue to leave ASAP.