Defense

Yulia stood on top of the outer wall of the city and saw the swarm of Sea Creatures below her.

Currently, there are five types of sea creatures that have been trying to invade them. The first type is the weakest fishmen or humanoid fish and was very weak against Fire Elemental Attacks but incredibly resistant against water and ice elemental attacks for obvious reasons. These fishmen would normally use their sharp teeth and water bullets for their main attack. They would sometimes use spears and shells as a shield but there weren't many of them probably because of the scarcity of resources as well.

The second type is the humanoid seals which are incredibly tough and bulky. Piercing them with sharp weapons would be very difficult unless they are using an item at a Unique-Rank or above… These creatures also have slow movements but their punches, headbutts, and kicks would easily create a crack in the city walls that has been repaired numerous times.