Sea Devil is an enemy fought at Subterranean Lake. It fights using a basic physical attack and is generally of no threat to the party.
Sea Devil is an enemy fought at sea in the Merged World between Crescent and Fork Tower. They fight using physical attacks, and have the valuable Defender to steal, but the enemy is one of the rarest in the game.
Legends tell of giant sea devils emerging from the sea to wrap their many arms around ships and drag them to the abyss. This seems impossible today, as the largest catches in recent memory are little more than a yalm across.Fishing log description.