Shell Drake

A final evolution of a Water Spirit. They can be evolved from Water Fish or Orb Fish, gaining a size in the process. They can be evolved into two types, an Endurance Level Type that learns Aegis or an Average Level Type that learns HealingClaws. It has a prerequisite of 3+ hp genes, and for reason. Their health rating is one of the best in the game, with a base stat of 30 and a growth of 2.0. Their ability to tank is enhanced with their Thorns and Aegis, and they can even break an enemy's defending stance, allowing them to out-tank the other. Their Pierce attacks even inflict Bleeding, further weakening the opposition.

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