Shieragucchi are enemies in Wario Land 4 they are found in underwater areas of the level Mystic Lake it is a big clam with angry eyes and green spikes.

Shieragucchi stay in one place and about half of their body is hidden in the ground. They do not leave their place until Wario swims nearby. When he does so, Shieragucchi quickly move up for short distance and open their shell to reveal their sharp teeth which will damage him if he touches the sharp teeth and spikes on the side and above, and they also pull him down when Wario gets between the two halves of their shell. A Shieragucchi is immediate defeated when Wario touches the unprotected part of the shell from below.

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