The White Line

It was a massive shadow swimming in the ocean. Thanks to the blurriness of the waters, Krune was unable to make out its appearance. All he managed to see was a massive shadow slowly swimming past where he was. 

Followed by it was an elongated sound dragged to the limit, resounding like a train's whistle heard from far away. Krune shuddered, feeling the intensity of the other party's presence. In his current state, he didn't even qualify as a snack. 

The Escapist curled its tail into a spiral before starting to rotate it, making use of the fin attached at the end of its tail to push the water. This way, it created some torque, allowing it to move on the ocean waters. 

It was capable of flying.