Sea Serpent

Evolution
A final evolution of a Water Spirit. They can be evolved from Water Fish or Orb Fish, gaining a size in the process. They have a prerequisite of 3+ strength genes.

They can be evolved into three different types:

If you're evolving them from Water Spirits, you might want to consider evolving different types so you can fuse away Splash for a better skill set.

Combat
In terms of pure Strength it is one of the most powerful in the game, with a base stat of 7 and a growth of 2.0. Its deadliness is only enhanced by its cleaving attacks that inflict both Poison and Bleeding.