The Ship and The Sirens

It started as a normal day on sea and we decided to venture into some cursed waters in hope of finding treasure. However, we never expected to see those things. My crew is gone. The only thing in the air is a shroud of mist accompanied by a sweet humming. I don't know why I'm left, it doesn't make sense! Now those THINGS are watching me, waiting for me. Their fishlike eyes are enough to pierce ice, their lack of eyelids make sure I'm always watched, their mesmerizing song won't give me a moment of silence. I am without options. They won't leave until they've picked the flesh off the bones of the last human. I'm in the crow's nest writing my final message. I want to rest, but the screams of the sirens never end.