Granshaker

HP	Element	Type	SP	Gold
720	Water	None	1	150

Location Encountered	Dropped
Sea of Baus	Quality Iron Sand Pumice of Despair
Stolen	Rare Steal
Quality Iron Sand	None

Abilities:

All-Aqua, Ground Shake

Susceptible To:

Poison

Weak Against:

Element Earth

Strategy

Granshakers have a whole lot of HP. It will probably take both Seth and Kaim's attacks, as well as a Ground spell from Jansen to defeat them. Because Jansen will have to cast, the Granshaker will probably get a turn in. If he does, you may see the move Granshaker, which will deal damage roughly equivalent to that of a physical attack to all three of your party members.

Information from German Dragon's FAQ/Walkthrough