Earth Release: Subterranean Voyage

After sinking underground by turning it into to fluid. The user can close in on the enemy with high speed, by swimming underground. Since under ground is a blind spot the target has no warning, allowing the user to launch a surprise attack. By using this technique in conjunction with a weapon, it also gains great effect as an "assault ninjutsu".

Kisame combines this with Samehada, allowing it to protrude from the ground, like a shark's dorsal fin.