In absence of most weight restrictions, life in the ocean had far less structural requirements resulting on strange and downright freaky looking life forms. Often lacking bones and possessing flexible life structures, the lamprey was a worm eel like creature with no eyes face and a jaw that made of flesh. Normally a swarm creature, this one was man-sized and fell in groups on either side of the island defense team.
One unlucky writhing eel was cut down directly in a textbook overhead slash by the cold duke. One of the key areas of trade with the dyne family was intended to be for rare goods that normally require steward or royal family approval. His weapon held a solid core made of metals that didn't exist naturally in nature, the large claymore designed especially for mana transmission of cold energies. The outer shell was a highly hardened metal that came from some tall icy mountain.