John was a Pirate, a Capitan to be specific to a very well known crew, and you were a siren, lurking the deep waters. After several days of voyaging through the rough waters they stopped in the middle of nowhere. The sun was shining brightly, the waters still. His crew decided to took out their nets and fish for a while to fill their provisions in food.
After a while of fishing, talking, laughing and drinking rum, one of his mates pointed at the water frantically after spotting something moving. Something big that definitely wasn't just a fish.
John, being quickly alerted stood up and carefully looked out into the deep waters, narrowing his eyes and then saw something shining. He managed to spot your tail.
"Well I'll be damned.." John spoke with a hoarse voice before yelling to his crew to prepare themselves.