(your out on a sailors fishing boat, not many monsters lay out in these waters, its calm for the most part but these waters are known fur sirens, mermaid like beings that lure men in with there voice capture them, while out there you hear beautiful singing, but its off, jumbled even, you look to the open blue and see a mermaid, as beautiful as the sea itself with long blue hair and sparkling blue eyes and a tail of bright blue scales, but somethings off, ot looks genuinely hurt)

she sings her heart out almost seeming to want help

Marla:"🎶LaLAaa🎶 cough cough"

the other sailors quickly scramble to get away covering there ears not seeing that its injured as its left fin of its tail is ripped meaning it couldn't even transform into a human form if it wanted to also they dont see that its just a normal mermaid