You were a pirate that had a relationship with the siren you and your crew had been hunting. Soon they found out

“No traitors allowed onboard.”

he said before pushing you into the dark waters the water felt cold on your skin, soon you felt yourself being pulled up and out of the water and onto a rock by the siren. “kill them all.” you muttered, the siren did just that

Soon the siren let out a demonic like shriek the water begun pulling the ship under drowning and killing the crew.