A sailor stood on a late night watch in the frigate called Maiden's Kiss. It was Empire's ship, one that guarded with couple of other frigates a group of trade ships. The sailor was half asleep, lulled by the steady movement of the ship. A lonely lamp hanged on a hook above him. It was dark, moonless night.
Suddenly, Maiden's Kiss shook and threw the whole crew from one side to the other, and back. They had hit a reef or something. They must've, but strangely they had not stuck on it. The guard went to the rear, to see if the reef was still visible. He froze at the sight that met his eye.
Meanwhile, only couple meters below him, other sailors were trying to block the enormous hole that the impact had done. It was hopeless, they knew, but they tried anyway. Salty water rushed in. Then, suddenly, another hit, and a couple of meters long, horizontal crack appeared below the waterline.
Back in the deck, the guarding sailor stared his eyes and mouth wide open, in horrified but soundless scream. He could not take his gaze away from it. It was no moving away again, but it was only taking up speed. It struck the ship again, with terrible force. It was few meters longer than the ship, and almost three meters wide. The ship was getting torn apart by it's mighty blows. It thad bony, snake and horse-like head. When it opened it's mouth, its enormous fangs gleamed. The sailor was mesmerized. He did not move even when the ship sunk completely and the serpent sunk those gleaming fangs into him, tearing him into little pieces in it's bloodlust.
The same happened to other frigates. The tradeships surrendered after they had seen the frigates' destiny. The Sealord came onboard with sea elementals, reeking of weed, fish and salty water. They took all the goods down underwater with them, and left the tradeships empty-handed, barely with enough food to get back to nearby docks.