The Demon Shark is a shark-like monster encountered while crossing the sea on the way to Cal Mira Island. It is responsible for unlocking the Shark Shield series. This series includes the Blue Shark Shield which increases "Swimming Skill" by +1, the Shark Bite Shield which increases "Shipboard Combat Skill" by +1, the Shark Leather Shield which gives a 2% Damage Reduction from the "Aquatic System", and the Shark Meat Shield which increases "Agility" by +3. Found in 『Chapter 82』 of the web novel.